802.589.0911 Live Chat With Us

Finish Selecting Your Vehicle to Shop For Your Spark Plug

Choose a Year for your International 's Spark Plug

  • 1985
  • 1984
  • 1983
  • 1982
  • 1981
  • 1980
  • 1979
  • 1978
  • 1977
  • 1976
  • 1975
  • 1974
  • 1973
  • 1972
  • 1971
  • 1970
  • 1969
  • 1968
  • 1967
  • 1966
  • 1965
  • 1964
  • 1963
  • 1962
  • 1961
  • 1960
  • 1959
  • 1958
  • 1957
  • 1956
  • 1955
  • 1954
  • 1953
  • 1952
  • 1951
  • 1950
Show More Years

Shop By Brand

The Following brands are available based on your search.

  • Autolite
    Autolite
  • Bosch
    Bosch
  • Champion
    Champion
  • Denso
    Denso
  • E3 Spark Plug
    E3 Spark Plug
  • NGK
    NGK

Best Selling Genuine International Spark Plugs

  • We Stock the following top leading brands, including Bosch, Champion, Denso
  • Constantly Updated Inventory of International Replacement Spark Plug Parts
Bosch
1974 International 200 Spark Plug 6 Cyl 4.2L Bosch - Nickel

P311-4FEA846    7911  New

Qty:
$3.56
Bosch Spark Plug
  • Bosch Nickel with Copper-Core Spark Plug
  • ; Gap 0.035 in
  • Nickel
  • Product Attributes:
    • Center Electrode Core Material: Nickel-yttrium And Copper
    • Center Electrode Tip Material: Nickel-yttrium
    • Ground Configuration: Standard
    • Ground Electrode Core Material: N/a
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Tapered V-profile
    • Ground Electrode Tip Material: Nickel-chromium
    • Hex Size: 20.8
    • Insulator Material: Ceramic
    • Insulator Type: Non-projected
    • Manufacturer Heat Range: 9
    • Outdoor Power Equipment Application: No
    • Package Contents: Spark Plug
    • Package Quantity: 1
    • Pre-Gap Size: .8
    • Prop 65 Warning Label Required?: No
    • Reach: 19
    • Resistance: 6000
    • Resistor: Yes
    • Seat Type: Flat
    • Short Style: No
    • Spark Plug Type: 4-cycle
    • Thread Diameter: 14
  • Bosch conventional Nickel-Copper Spark Plugs are designed to deliver performance and value. Heavy-duty yttrium-enhanced nickel center electrode with copper core provides a longer lasting copper core spark plug. Engineered to meet or exceed Original Equipment specifications for nickel-copper core spark plugs.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Bosch
Additional Fitment Information:
Vehicle Block Engine CID CC
1974 - International 200 L 6 Cyl 4.2L 258 -
Bosch
1974 International MS1210 Spark Plug 6 Cyl 4.2L Bosch - Nickel

P311-4FEA846    7911  New

Qty:
$3.56
Bosch Spark Plug
  • Bosch Nickel with Copper-Core Spark Plug
  • ; Check Specification Under Hood for Gap Settings
  • Nickel
  • Product Attributes:
    • Center Electrode Core Material: Nickel-yttrium And Copper
    • Center Electrode Tip Material: Nickel-yttrium
    • Ground Configuration: Standard
    • Ground Electrode Core Material: N/a
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Tapered V-profile
    • Ground Electrode Tip Material: Nickel-chromium
    • Hex Size: 20.8
    • Insulator Material: Ceramic
    • Insulator Type: Non-projected
    • Manufacturer Heat Range: 9
    • Outdoor Power Equipment Application: No
    • Package Contents: Spark Plug
    • Package Quantity: 1
    • Pre-Gap Size: .8
    • Prop 65 Warning Label Required?: No
    • Reach: 19
    • Resistance: 6000
    • Resistor: Yes
    • Seat Type: Flat
    • Short Style: No
    • Spark Plug Type: 4-cycle
    • Thread Diameter: 14
  • Bosch conventional Nickel-Copper Spark Plugs are designed to deliver performance and value. Heavy-duty yttrium-enhanced nickel center electrode with copper core provides a longer lasting copper core spark plug. Engineered to meet or exceed Original Equipment specifications for nickel-copper core spark plugs.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Bosch
Additional Fitment Information:
Vehicle Block Engine CID CC
1974 - International MS1210 L 6 Cyl 4.2L 258 -
Champion
1971 International 1210 Spark Plug 8 Cyl 5.0L Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Resistor Type Gap .035"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1971 - International 1210 V 8 Cyl 5.0L 304 4982
Champion
1974 International 200 Spark Plug 8 Cyl 6.6L Champion - Copper Plus

P311-0EDD225    405  New

W9EP , 14G82 , R44NS , GR5 , R44XLS , CR44NS , 7911 , WR9DCX , WR9DS , BP4ES , W10DC , WR9LS , 44XLO , 4020 , WR9DC , 45XLS , W14EPU , R46XLS , W9DC , 4221 , W14EKRS11 , R45NS , 44NS , 46XLS , 45NS , BPR4EY , 7913 , W10D , RN14YC , R45XLS , W9D , W14EXRU11 , R44CXLS , M805853 , 44XLS , WR9DPX , W14EXRU , 14GR52 , BPR4ES , BPR2ES , C44NS , WR9DP , 14G52 , W9DC0 , AG82 , W14EXU11 , F4RTC , W14EXU , AGR82 , WR9D , BPR4ES11 , 82300317 , W14EPRU

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RN14YC
  • ; Plug Type RN14YC Gap .032" OE Type
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.12
    • Manufacturer Heat Range: 14
    • Plug Type: Rn14yc
    • Reach: 0.75
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1974 - International 200 V 8 Cyl 6.6L 401 6572
Champion
1980 International Cargostar Spark Plug 8 Cyl 6.4L Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Gap .035"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Fuel Type Block Engine CID CC
1980 - International Cargostar GAS V 8 Cyl 6.4L 392 -
Champion
1980 International Scout II Spark Plug 8 Cyl 5.0L Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Gap .032" OE Type
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1980 - International Scout II V 8 Cyl 5.0L 304 -
Champion
1977 International Scout II Spark Plug 4 Cyl 3.2L Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Gap .032" OE Type
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1977 - International Scout II L 4 Cyl 3.2L 196 -
Champion
1978 International Scout II Spark Plug 6 Cyl 3.2L Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Gap .030"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1978 - International Scout II L 6 Cyl 3.2L 198 -
Champion
1973 International MS1210 Spark Plug 6 Cyl 4.2L Champion - Copper Plus

P311-34B4063    404  New

W8LCR , 93230927 , F5TC , 4219 , F5RTC , AGR42C , R43XLS , 5213693 , 93206675 , 7507837 , BPR5ES11 , 14GR42 , 8008 , BPR5EY11 , WR8DPX , 4220 , 4091713 , AGR42 , 4218 , 7922 , SF6E , AGS52C , RN12YC , WR8DP , WR8D , 7905 , AGS32C , BPR5ES , AGS42C , AGR32C , W8DC0 , SM6E , WR8DC , ETC7244 , SF426E , AGR52 , 9007 , WR10LC , BPR5EY

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RN12YC
  • ; Plug Type RN12YC Gap .032" OE Type
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.12
    • Manufacturer Heat Range: 12
    • Plug Type: Rn12yc
    • Reach: 0.75
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1973 - International MS1210 L 6 Cyl 4.2L 258 4229
Champion
1973 International 1110 Spark Plug 6 Cyl 4.2L Champion - Copper Plus

P311-34B4063    404  New

W8LCR , 93230927 , F5TC , 4219 , F5RTC , AGR42C , R43XLS , 5213693 , 93206675 , 7507837 , BPR5ES11 , 14GR42 , 8008 , BPR5EY11 , WR8DPX , 4220 , 4091713 , AGR42 , 4218 , 7922 , SF6E , AGS52C , RN12YC , WR8DP , WR8D , 7905 , AGS32C , BPR5ES , AGS42C , AGR32C , W8DC0 , SM6E , WR8DC , ETC7244 , SF426E , AGR52 , 9007 , WR10LC , BPR5EY

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RN12YC
  • ; Plug Type RN12YC Gap .032"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.12
    • Manufacturer Heat Range: 12
    • Plug Type: Rn12yc
    • Reach: 0.75
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1973 - International 1110 L 6 Cyl 4.2L 258 -
Champion
1969 International 1000D Spark Plug 6 Cyl 3.8L Champion - Copper Plus

P311-34B4063    404  New

W8LCR , 93230927 , F5TC , 4219 , F5RTC , AGR42C , R43XLS , 5213693 , 93206675 , 7507837 , BPR5ES11 , 14GR42 , 8008 , BPR5EY11 , WR8DPX , 4220 , 4091713 , AGR42 , 4218 , 7922 , SF6E , AGS52C , RN12YC , WR8DP , WR8D , 7905 , AGS32C , BPR5ES , AGS42C , AGR32C , W8DC0 , SM6E , WR8DC , ETC7244 , SF426E , AGR52 , 9007 , WR10LC , BPR5EY

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RN12YC
  • ; Plug Type RN12YC Resistor Type Gap .032"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.12
    • Manufacturer Heat Range: 12
    • Plug Type: Rn12yc
    • Reach: 0.75
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1969 - International 1000D L 6 Cyl 3.8L 232 -
Champion
1969 International Scout Spark Plug 6 Cyl 3.8L Champion - Copper Plus

P311-34B4063    404  New

W8LCR , 93230927 , F5TC , 4219 , F5RTC , AGR42C , R43XLS , 5213693 , 93206675 , 7507837 , BPR5ES11 , 14GR42 , 8008 , BPR5EY11 , WR8DPX , 4220 , 4091713 , AGR42 , 4218 , 7922 , SF6E , AGS52C , RN12YC , WR8DP , WR8D , 7905 , AGS32C , BPR5ES , AGS42C , AGR32C , W8DC0 , SM6E , WR8DC , ETC7244 , SF426E , AGR52 , 9007 , WR10LC , BPR5EY

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RN12YC
  • ; Plug Type RN12YC Resistor Type Gap .030"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.12
    • Manufacturer Heat Range: 12
    • Plug Type: Rn12yc
    • Reach: 0.75
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1969 - International Scout L 6 Cyl 3.8L 232 -
Champion
1971 International M800 Spark Plug 4 Cyl 2.5L Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Resistor Type Gap .032"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1971 - International M800 L 4 Cyl 2.5L 152 2491
Champion
1969 International 1500C Spark Plug 8 Cyl 5.0L Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Resistor Type Gap .030"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1969 - International 1500C V 8 Cyl 5.0L 304 4983
Champion
1980 International S2125 Spark Plug 8 Cyl 8.8L Champion - Copper Plus

P311-34B4063    404  New

W8LCR , 93230927 , F5TC , 4219 , F5RTC , AGR42C , R43XLS , 5213693 , 93206675 , 7507837 , BPR5ES11 , 14GR42 , 8008 , BPR5EY11 , WR8DPX , 4220 , 4091713 , AGR42 , 4218 , 7922 , SF6E , AGS52C , RN12YC , WR8DP , WR8D , 7905 , AGS32C , BPR5ES , AGS42C , AGR32C , W8DC0 , SM6E , WR8DC , ETC7244 , SF426E , AGR52 , 9007 , WR10LC , BPR5EY

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RN12YC
  • ; Plug Type RN12YC Gap .030"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.12
    • Manufacturer Heat Range: 12
    • Plug Type: Rn12yc
    • Reach: 0.75
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Fuel Type Block Engine CID CC
1980 - International S2125 GAS V 8 Cyl 8.8L 537 -
Champion
1981 International 1724 Spark Plug 8 Cyl 6.6L Champion - Platinum Power

P311-4C81651    3401  New

4305 , AWSF32F , AWSF42P , HGR8DDP , AGSF22FM1 , 8 , HGR7KQC , 8006 , RS10PYC4 , AWSF32E , 8003 , AWSF22E , AWSF32P

Qty:
$4.45
Champion Spark Plug
  • Champion Platinum Power - Boxed - RS10PYC4
  • ; Plug Type RS10PYC4 Gap .035"
  • Platinum Power
  • Product Attributes:
    • Center Electrode Tip Material: Platinum Firing Tip
    • Classification: Champion Platinum Power
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.625
      • 15.880
    • Insulator Height: 0.06
    • Manufacturer Heat Range: 10
    • Plug Type: Rs10pyc4
    • Reach: 0.689
    • Resistor Type: Yes
    • Seat Type: Tapered
    • Thread Diameter:
      • 0.551
      • 14.000
  • Champion Platinum Power spark plugs deliver powerful performance. Made from exclusive Heat-Active alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.
  • Suggested Purchase Quantity: 10
    • Most jobs typically require 10 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle Block Engine CID CC
1981 - International 1724 V 8 Cyl 6.6L 404 6622
Champion
1984 International G2105 Spark Plug Champion - Copper Plus

P311-341A5CB    14  New

RJ12YC , WR7F , BPR6S , 4339425 , CR43S , AR42 , 14R32 , SM8E , SF8E , AR32 , W20PRU , R44S , R43CS , R43S , 14R42 , 4091933 , AS42C , R42S

Qty:
$3.25
Champion Spark Plug
  • Champion Copper Plus- Boxed - RJ12YC
  • ; Plug Type RJ12YC Gas Models Gap .035"
  • Copper Plus
  • Product Attributes:
    • Center Electrode Tip Material: Nickel Copper Alloy
    • Classification: Champion Copper Plus
    • Electrical Terminal Type: Non-removable Nut
    • Ground Electrode Core Material: Nickel Copper Alloy
    • Ground Electrode Quantity: 1
    • Hex Size:
      • 0.813
      • 20.650
    • Insulator Height: 0.09
    • Manufacturer Heat Range: 12
    • Plug Type: Rj12yc
    • Reach: 0.375
    • Resistor Type: Yes
    • Thread Diameter:
      • 0.551
      • 14.000
  • Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Champion
Additional Fitment Information:
Vehicle
1984 - International G2105
Denso
1971 International M1200 Spark Plug 6 Cyl 3.8L Denso - Platinum TT

P311-4CBE061    4501  New

90919-01091 , 0000-18-B601 , 98079-551-32S , EAC8916 , 09482-00167 , B602-18-110 , 22401-V1416 , J3189066 , 90048-51093-000 , 2098 360 , 18813-11051 , 101 000 039 AB , 98079-551-46S , 90048-51106-000 , ERR 3799 , 003 159 27 03 , 19301656 , FE79-18-110 , MS851417 , 12 12 9 061 445 , 4318 131 , PW16TT , EAC8915 , ETC 6437 , 12 12 1 272 128 , 003 159 10 03 , AM20-18-110 , 12 12 9 061 383 , B601-18-110 , 5613870 , 18818-11051 , 4106 129 , 09482-00506 , 003 159 29 03 , 90048-51081-000 , 98079-551-46 , JLM9661 , 98079-551-83 , 5213 693 , 91171720 , 003 159 11 03 , 5613932 , 19307141 , 90919-01065 , 003 159 47 03 , 96057875 , 22401-P8315 , 98079-551-83S , 90919-01064 , 0000-18-8914 , 8914-18-110 , 12 12 9 061 869 , 12 12 1 279 599 , 18825-11101 , B630-18-110 , 4686 083 , 4727 114 , 5235 010 , MS851552 , SPRN14PMP5 , ERR 743 , 3953-18-110 , 22401-V1415 , 5613878 , 4425 964 , MS851301 , JLM9663 , 4425 979 , MD365108 , 18835-11161 , 90919-01115 , 09482-00155 , 88901006 , 22401-P8314 , MS851432 , MS851237 , 98079-551-32 , 999 170 062 90 , 19145286 , J3242841 , AGS32C

Qty:
$4.66
Denso Spark Plug
  • Spark Plug Platinum TT
  • ; Gap 0.040 Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap
  • Platinum TT
  • Product Attributes:
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Platinum
    • Ground Configuration: Twin-tip
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Titanium Enhanced Twin-tip
    • Hex Size: 20.6
    • Manufacturer Heat Range: 16
    • Pre-Gap Size: 1.0
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Flat
    • Thread Diameter: 14.00
  • Twin-Tip design enables faster flame propagation for more complete combustion.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Denso
Additional Fitment Information:
Vehicle Block Engine CID CC
1971 - International M1200 L 6 Cyl 3.8L 232 -
Denso
1969 International M1100 Spark Plug 6 Cyl 3.8L Denso - Iridium Power

P311-16F9C2F    5305  New

999 170 062 90 , 12 12 1 272 128 , 90919-01065 , 18813-11051 , 4425 964 , 12 12 9 061 445 , 003 159 29 03 , 90048-51106-000 , 19307141 , 4318 131 , 003 159 47 03 , MS851301 , J3189066 , 88901006 , 5613870 , 09482-00506 , 0000-18-B601 , 90048-51093-000 , 101 000 039 AB , B601-18-110 , 90919-01115 , JLM9661 , FE79-18-110 , 98079-551-46 , 96057875 , 91171720 , MS851552 , 98079-551-32 , EAC8916 , B602-18-110 , 5235 010 , 12 12 1 279 599 , 22401-V1415 , 18835-11161 , 003 159 27 03 , SPRN14PMP5 , ERR 743 , 003 159 10 03 , 98079-551-83S , 4106 129 , 09482-00155 , 22401-P8314 , AGS32C , 3953-18-110 , ERR 3799 , 5613878 , 19301656 , J3242841 , MS851417 , 19145286 , AM20-18-110 , 0000-18-8914 , 4727 114 , IW16 , 22401-P8315 , 5613932 , 18818-11051 , 12 12 9 061 869 , 4425 979 , 90919-01064 , 003 159 11 03 , 5213 693 , 12 12 9 061 383 , 18825-11101 , MD365108 , 98079-551-32S , 90919-01091 , ETC 6437 , 98079-551-46S , MS851432 , 90048-51081-000 , 8914-18-110 , MS851237 , 4686 083 , 98079-551-83 , 09482-00167 , 22401-V1416 , B630-18-110 , EAC8915 , 2098 360 , JLM9663

Qty:
$9.60
Denso Spark Plug
  • Spark Plug Iridium Power
  • ; Gap 0.044 Iridium Power - Performance Upgrade with World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Ir Alloy (90% Ir)
  • Iridium Power
  • Product Attributes:
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Iridium Rhodium Alloy
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Tapercut, U-groove
    • Hex Size: 20.6
    • Manufacturer Heat Range: 16
    • Pre-Gap Size: 1.1
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Flat
    • Thread Diameter: 14.00
  • Increased performance with World's smallest Iridium Center Eletrode (0.4mm).
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
Brand: Denso
Additional Fitment Information:
Vehicle Block Engine CID CC
1969 - International M1100 L 6 Cyl 3.8L 232 -
Denso
1971 International Scout II Spark Plug 6 Cyl 3.8L Denso - U-Groove Conventional

P311-4CD31AF    3013  New

90919-01065 , ERR 743 , W14EXR-U , 12 12 1 279 599 , ETC 6437

Qty:
$2.73
Denso Spark Plug
  • Spark Plug Standard
  • ; Gap 0.032 O.E. Recommended Resistor Plug with Patented U-Groove Design
  • U-Groove Conventional
  • Product Attributes:
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Nickel
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-groove
    • Hex Size: 20.6
    • Manufacturer Heat Range: 14
    • Pre-Gap Size: 0.8
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Flat
    • Thread Diameter: 14.00
  • U-Groove design provides better ignitability for increased engine efficiency.
  • Suggested Purchase Quantity: 6
    • Most jobs typically require 6 of this item.
Brand: Denso
Additional Fitment Information:
Vehicle Block Engine CID CC
1971 - International Scout II L 6 Cyl 3.8L 232 -

Latest International Repair and Spark Plug Installation Advice

CarJunky AutoAdvice

Gas Mileage Increase from Spark Plugs?

Showing 2 out of 9 Posts | Show 7 Hidden Posts
Question From jtz54 on Gas Mileage Increase from Spark Plugs?

I normally won't post stuff like this but seeing how gas prices are these days...

http://www.supersonicspark.com/

My friend told me about these plugs. He told me his gas mileage went up by 8%-10%. Having bought quite a few of these
including Tornado and fuel line magnets and finding none of them made a damn bit of difference, I was very skeptical!!!

I put these in my 2000 Suzuki Grand Vitara 4WD Auto which was averaging 19-21 MPG. I went through several tanks before I concluded that these things do make a difference now averaging 22-23 MPG. A couple of weeks ago I put in a new set of Bosch Platinum 4 plugs and my gas mileage went back down to the 19-21MPG as before. I originally changed out the Supersonic sparks because my gas mileage had dropped and my friend had told me when the plugs wear out I would notice the difference (but it wasn't the plugs but the fuel filter, hey I hadn't changed ever with 100K+ on the car).

Anyone want to try these out and let me know your results. They're only $5.95 for most cars so the guy isn't trying to screw anybody.

PS
When I took the two Tornado back to the dealer they just gave me my money back with no questions or even try to explain why it didn't work.

Response From Guest

Actually, this isn't as hard to believe as some have made it out to be. The only caveat is that this same seemingly, remarkable feat can be accomplished with your regular ole run-of-the-mill spark plug.

1. Take your favorite brand X spark plug
2. Cut the grounding strap down so that it covers just half of the electrode when looking straight down on it.
3. File the corners of the grounding strap to make the ground strap round.
4. With a set of gapping pliers (do not beat, bag, or bend the grounding strap), properly gap the plug.
5. INDEX the spark plugs so that the open portion of the electrode gap faces the intake valve (google "spark plug indexing" if you're unfamiliar with this).

Whola! There's no magic potion. There's no "Supersonic" atomization of fuel particles, no Holy Grail spark plug. All this spark plug has done is unshroud the electrode so that more spark surface meets more of the air/fuel mixture.

Does it do what they say it can do whn compared to an out of the box spark plug? Probably.

Does it do it because of the reasons stated on the listed website? Not.

Can a cheapo set of OEM spark plugs accomplish the same thing? Yes.... and done correctly will net a better result.

Response From Guest

By the way....

I've personally participated in a 7 rear wheel horse gain on back to back dyno pulls that resulted from properly indexing a set of spark plugs. No work had yet been done to the grounding straps at that point.

Response From Tom Greenleaf

Race cars techs have been indexing plugs since the beginning of time. It can help especially with higher RPM use. It's not all the easy with "taper" seated plugs though..... too loose, too tight?

T

Response From Guest

It's not as easy as it is with "ringed" plugs but you can by shims that fit over the plug. They work similar to crush washers but CAN be overtorqued and torn.

Response From Guest

Can you say *bogus* ? "Let me sell stuff by posting them on a blog so people will be misled into buyinh them..." Sorry, not for me.

Response From carjunky Top Rated Answer

LOL... I agree if they really did work we would have gotten an email to try them out and write a review for them. when it comes to engine internals its difficult to stray outside of a name brand company... i would hate to see what would happen if that little attachment with the whole in it was to break inside your car....

Response From Guest

i own a 1988 Ford Mustang coupe lowrider..and i wouldnt dare to put those in my car.....i use only motorcraft...and my "stang" gets 28/36 mpg

Response From Tom Greenleaf

Spark plugs should stay as factory recommended. They won't get you more power or better gas mileage. Trust me -- an auto maker would have used them to brag about the HP or mileage! T

95 pontiac sunfire SMOKING EXHAUST MANIFOLD

Showing 4 out of 6 Posts | Show 2 Hidden Posts
Question From bigchillenhustla on 95 pontiac sunfire SMOKING EXHAUST MANIFOLD

CAR History
I recently did a "head job" changing the head gasket and all seals and valves because the car overheated. I've been driving the car for six months and on only three cylinders because one spark plug wire didn't work which is why the engine was idling so hard. I fixed that and the engine is silent and has more power. Two weeks later I drive it on the freeway, it broke down on me.
Problem
IT WONT START, AND WHEN IT BARELY DOES START, IT MAKES INTERNAL LOUD NOISES, A LOT OF SMOKE COMES OUT FROM THE EXHAUST MANIFOLD, IDLES ROUGH, WHEN I PUT THE GEAR IN DRIVE AND LIGHTLY STEP ON THE GAS PEDAL THE CAR SHUTS OFF, MY CATALYTIC CONVERTER IS ALSO BROKEN, MAKES LOUT NOISES, ALSO ...ALL FOUR OF MY SPARK PLUGS WERE BLACK SO I CHANGED THE SPARK PLUGS BUT STILL THE SAME....
My Guess
Could it be the rings??? Is the piston hitting my valves causing the loud noise??? No compression???

HELP!

Response From Loren Champlain Sr

bigchillen... You drove it on three cylinders for six months and are just now having problems? And your cat is bad?
Go figure! You should get down on your knees and thank that poor little thing for giving you six more months of it's life. It sounds, from your symptoms, that is over fueling. There are many reasons this could be happening. A common fault is a loss of vacuum to the MAP sensor. If it's been over fueling all this time, the crankcase could have more fuel in it than oil, which would explain the noise. You need to address the over fueling first, then change the oil and filter, and pray. If it survives, then, you will be looking at replacing the catalytic converter.

Response From bigchillenhustla Top Rated Answer


I forgot to mention that two of my fuel injectors were badly leaking, I bought two new ones, but one was defected and its still leaking but the other one is fine.

So... I should get another fuel injector, change the oil and filter and ask god for forgiveness.

Or whats the best way to address the over fueling???


Any suggestions.

Thank you.

PS ..im not too familiar with the MAP sensor, whats that again?? This is my first semester in amech!

Response From Loren Champlain Sr

Oh, my. I'm almost at a loss for words. (almost). I don't think automobiles are on the Good Lords' short list of priorities. Sorry. This leaky injector; Is it leaking internally, or externally? If it's leaking internally, that would definitely cause a flooding condition and a misfire. The misfire could cause low manifold vacuum which would make the MAP sensor and fuel pressure regulator to go rich, causing a domino effect.
If it's leaking externally, and you know it...Post your address and we'll supply the weenies and marshmallows.
First semester at amech? Not familiar with that.

Response From bigchillenhustla

I am sure that the fuel injector is leaking externally. The seal just does not work, no matter how many new seals I get. The old one leaked internally from the plug. This one is leaking around it. It's a "push-in-fit" injector.

So you think my fuel pressure regulator is messed up??? I will get a new one. If it works, I'll get some steaks, salmon a grill and we could start a bbq.

Maybe I have a blown head gasket again. I did a compression test before this problem and two cylinders in the middle are extremely low, but the car ran fine until I drove it on the freeway a few weeks later.

God is a forgiving person.

thank you.

amech is an engine rebuilding class at my community college.

Response From Loren Champlain Sr

Installing the injector rail with the injectors connected can be very tricky...Easy seasoned veterans can damage an O ring during replacement. There is a small O ring at the top of the injector where it attaches to the fuel rail and a larger one where the injector goes into the manifold. Also, it is not uncommon for the injector bodies to leak, which requires replacement of the injector. But, regardless of what's leaking, you can't drive it like this. The marshmallows and weenies were for the engine fire that is going to happen if you don't fix this. NOW.
And, yes, God is a forgiving God. Thank God!

2005 pt cruise problems

Showing 2 out of 2 Posts
Question From hawkgirl on 2005 pt cruise problems

my check engine light is on and my car stumbles like it wants to die..i took it to auto zone and they said its a code301 cylinder 1 misfire...does anyone know what that is and what how to fix it....help

Response From Double J Top Rated Answer

Cylinder misfires can be caused by a faulty spark plug,spark plug wire,fuel injector,ignition coil..etc
Or worst case scenerio,internal engine problem.

You should take it in to have it diagnosed so you just don't throw parts at it.
Probably won't hurt to have it "tuned up"..New plugs ,wires ,filters..etc.


Jim

Hesitates when accelerate, now dying?

Showing 2 out of 11 Posts | Show 9 Hidden Posts
Question From janniehank on Hesitates when accelerate, now dying?

Ford Escort LX Wagon 1996 (automatic) Maybe a 1.9 L? 4 cyclinder. oil change 131,000 8-8-2015. coil pack 99,000 miles. spark plug and wires 124,653 miles.
Car had trouble starting when fan on and hot weather (seems like that's when) but starts after couple of tries. Now when we get to stop sign then accelerate it hesitates like or misses. This is not all the time. - took to repair shop guy looked (wasn't doing it) said maybe bad gas. Couple days ago. car sputtered died coasted into parking lot. Waited awhile and started and drove to repair shop. Repair guys says needs a new coil (is ignition coil same thing as the coil Pack??). Said not worth fixing as the engine has a knock in it. Something going bad internally in engine. The items done at after 111,000 miles were done by the current repair shop. Any help appreciated.

Really not sure if we're getting the straight story or they don't want to deal with us.
They changed and put rear stablizer links at 121,000 miles and new rear struts at 124,670 miles
Alternator at 116,503 miles
check valve assembly 111,423 (purge flow assembly?)
vacumn elbow & coil pack - 99,198
Rear Springs & Strutts 87,470 miles
Spark plugs & distributer 63,172
transmission gasked and serviced - 56,332

Response From Tom Greenleaf Top Rated Answer

"Said not worth fixing as the engine has a knock in it. Something going bad internally in engine."




That's pretty damning for a glance at your problem!
You seemed to have tracked all services by the mile so well what did anyone miss?


IDK - For now suggest another shop for an engine diagnosis, codes read fully up to a compression test as well or whatever a real tech can prove not what was said above. It that person or place was just having some kind of bad day fine but makes it seem like it's not worth buying for gas for the thing either with those comments!


T

Response From janniehank

Question: is there more than one coil in the car?? Guy who changed that at 99,000 is no longer available so had to change shops at 111,000 miles. Coil had a lifetime waranty.

Started this morning doesn't have the "clicking" noise. Would the bad coil cause the missing and hesitation sometimes at accerlation and the last time just dying. We did add new gas at a different station after the guy said it might be bad gas.

It's hard to know if we're throwing good money away to something really bad.

Response From Tom Greenleaf

Oh boy. This is messy with what was said to you. If a coil pack alone is doing this AND this is a 1.9 (find out, 8th digit of VIN would be a "J") if not it's a 1.8. So if that was really known to be the problem and a noise heard that now you say isn't there I
we are at a loss.


Coil would look like this, ONE on the 1.9 if correct......
/
Lifetime warranty would be if you knew of where and copy of receipt no doubt? Not wildly expensive as a car goes.


This whole table got turned around when told you engine is essentially junk and I don't believe that at all right now. My experience with this type coil or high voltage items is then can fail and worse when damp if they work at all. Could misfire like all confused and even die out on you. Noise from this? IKD - let's not go there - not a knock anyway.


Tell me if I'm wrong but you aren't doing this diagnosis or work yourself and hiring this done by techs - right? Fine. If they can't absolutely peg down why then just tell you and go elsewhere NOT to essentially give up on a car so fast!


Hurry with this as running poorly for any reason will snowball into needing more and costly. Do at least check engine oil level yourself and be sure it's correct or get help even with that. Correct oil for the car only if needed.
Then get this diagnosed. You have no useful info from this last place that I can see.


Car is ~20 years old. Fine. If well cared for even with some surprises along the way doesn't mean it's over. You have lower miles for the age and seem to pay attention.


Again: It needs a proper diagnosis and estimate to fix the problem first. That and to you is car generally in good shape to even spend few bucks only you can decide but know what is really up not the top post bull that means nothing so far,


T

Response From janniehank

All stuff was done by mechanic shop. Up until 111,000 miles same guy then he retired and found new shop. We didn't check to see if they overfilled the oil, but they did just change the oil only a couple of wks ago.

It is a 1.9 L engine as all papers show this.

Husband thinks he might be able to change out the coil if that's what's bad. Who knows. I didn't know why they didn't put it on the analizer. Thanks

Response From Tom Greenleaf

Oil change times are scary at certain places but I really suggest making sure oil is right by dipsticks no matter who or where they get done. It's a time to leave a hose a line off, oil filter not tight or wrong in some way, failed drain plug or its gasket then checking when filling up that it's right. IMO A qt. off up or down isn't going to instantly be a problem for say 4qt systems or more.


Gotta go soon. If this somehow is a coil issue and it does look like that an easy check is to spray/mist it with even Windex no pure clean water is the point, and see if that show arcing spark or kills it right away. With engine cool as not to shock it with cool mist all at once - these parts can crack from that.
BTW - your engine size should be listed on a sticker under the hood. Best reason to know is I think even up to 1996 Ford, Mercury were basically totally Mazda on some with just putting on all nameplates of a Ford or Mercury, then the Tracer.


Good luck. Unless oil is wildly wrong it's unusual to me for sudden fatal engine failures without some reason,


T

Response From janniehank

We have appointment with the mechanic, but it doesn't sound good. We changed the coil out with a new one. The engine started but sounds louder than it did before with a loud knock. I'm afraid it'll new engine. suppose the analizing machine can tell that. We checked oil. it was at the correct level

Response From Discretesignals

They don't have a machine to tell you what is knocking around inside your engine. To diagnose something like that sometimes experience helps along with a some type of tool to pinpoint the noise with, such as a mechanic's stethoscope or a long shanked screw driver.

Response From janniehank

Resolved - needed a different engine. Changed out the engine and it's working fine now! Hurrah!

Response From Tom Greenleaf

OK - I'll call this thread solved as no point in discussing old engine now. Good luck with the replacement. Locking thread to keep spammers out. YOU may ask any moderator to re-open it if you wish,


T

Response From Tom Greenleaf

Again -Can't say. I can' think of how that coil could make a "knock" noise but not there hearing it either. If so why and is it real or some stupid thing overlooked I/we don't know.


If worried enough don't even drive the car or run it anymore. Let an experience ear hear this and do tests before declaring this engine is toast and an approach from there if so?


Good luck that it's something silly?


T

Rough idle 1999 Malibu 4 cyl

Showing 2 out of 14 Posts | Show 12 Hidden Posts
Question From Maliboozer on Rough idle 1999 Malibu 4 cyl

Hello.
My car: 1999 Chevy Malibu 2.4L 4 Cyl

My car idles rough (it has for a long time) once it is up to running temperature - it seems to idle fine when it's cold. It has given a "cylinder 2 misfire" fault code numerous times. I've tried changing spark plugs, cleaned and swapped fuel injectors (I was doing work that required removal of the fuel rail), and just recently replaced the #2/3 ignition coil to no avail. It hasn't produced the code again yet, but still idles poorly (I don't care that much except it just failed an emissions test due to high HC ppm at idle...). Any suggestions before I send it to a real mechanic?

Thanks.

Response From Hammer Time

You might want to take a complete compression test.

The most common cause of misfire on that engine is the white plastic coil housing and the spark plug boots

Response From Maliboozer

D'oh! I was wondering about that plastic thingy. Is that problem due to a bad high voltage connection inside the plastic? I checked the resistance of the connections within the housing, but I didn't know what value I was looking for. After you mentioned the boots, I remembered I did switch #1 and #2, but I don't know which cylinder is now missing since I haven't gotten another fault code.

Is there a way to test the plastic housing or the boots? Should I check for vaccuum leaks and if so, is there an easy way to do so?

Response From Hammer Time Top Rated Answer

The resistance means nothing. That piece acts as a distributor cap on that engine and they crack internally and cause crossfiring. I would just change it and the spark plug boots and make sure none of the plugs have hairline cracks in the glass.

Response From Maliboozer

Awesome thanks, I'll give it a try.

As for the compression test, would a simple compression tester be OK, or do you mean a leak-down test?

Response From Maliboozer

BTW I'll let you know how it goes in a few days - the car is in another city and I'm away for work for the next 5 days. Thanks again.

Response From Hammer Time

I would probably try the housing and plug boots first and if you still have an issue, take a compression test. Just a basic compression tester will do.

Response From Maliboozer

I'll do that. Thanks much.

Response From Maliboozer

OK. I replaced the housing, the boots, and the spark plugs. I also switched the coils, to see if the misfire would move to another cylinder. It still idles rough. Instead of P0302 (cyl 2 misfire), now I get a P0300 (random/multiple cylinder misfire detected). Time for a compression test, or is there another possible culprit somewhere in the ignition system?

Response From Hammer Time

What brand plugs are you using?

Response From Maliboozer

Champion. I checked the gap before I put them in as well.

Response From Hammer Time

You should be using Delco plugs in that car and nothing else.

Response From Maliboozer

You really think that could be causing the misfire(s)?

Response From Hammer Time

I don't think it's the whole problem but it's likely a contributing factor. You want to check them closely for cracks in the porcelain too. Look for black carbon tracks.