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CarJunky AutoAdvice

87 conquest TSI runs very rich ?

Showing 2 out of 2 Posts
Question From redlines on 87 conquest TSI runs very rich ?

when I first start car in the morning it gets way to much fuel and runs poorly, after about a minute and a half and a couple taps on the accelerator it clears up and is drivable but still seems to run a bit rich, it is fuel injected (throttle body type) it gets poor milage for a small car also ?

Response From Hammer Time Top Rated Answer

Have the computer scanned for codes to find a starting point.

Have to prime truck to get it started, help!

Showing 2 out of 7 Posts | Show 5 Hidden Posts
Question From Guest on Have to prime truck to get it started, help!

I have a 87 Chevy 4X4 305ci full size blazer. About 4 months ago the only way I could get my blazer started was to prime the carb. I was told to put a new fuel regulator on the carb, did that, and the blazer started up everytime. Now 4 moths later I'm having the same problem, if I prime the motor by pouring gas in the carb, it'll start. Once I shut it off, I have to prime it again. Any ideas what it could be this time?

Response From Guest Top Rated Answer

I'm sorry, this blazer doesn't have a carb, it has a fuel injected throttle body. I just put a new fuel regulaor in this throttle body, started right up for a month, now it won't til I prime it with gas.

Response From Guest

Check your fuel pressure. Sounds like it could be a fuel pump. The throttle body is probably the best FI system out there, farily simple.

The fuel pump can cause alot problems. I have seen the pump act up meny different ways.

Response From speedyal

When you turn the key to "Run", not "Start", can you hear the fuel pump run? May take a helper with his/her head near the tank. The pump runs to build pressure ASAP. I think it's controlled by a relay. Just an idea, maybe someone can verify me on this?

Response From speedyal

Maybe this will help? Looks like the ECM controls the pump, but I just GOTTA believe there is a relay to handle the current.

http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/11/54/27/0900823d80115427.jsp

Response From speedyal

Here's an article with the same problem and possible solutions.

http://www.startribune.com/435/story/395012.html

Response From Guest

I had this same problem 4 months ago. Put in a brand new fuel pump and assembly, new relay, and a new fuel regulator. I found out the wiring had a short in it somewhere between the relay and pump harness. I ran new wires from the fuse box to an off and on switch. When I start the truck, I trun on the switch, I can hear the pump run, then I turn the key to start. I by-passed the fuel relay, is that ok? It ran for two months fine.