car is ticking time bomb!
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Junior Member
Joined: Mar 2009
Posts: 60
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From: Newfoundland, Canada
Car: 1987 Iroc Z
Engine: 5.7 L TPI
Transmission: TH700-r4
car is ticking time bomb!
OK. so its kinda long story but here it goes
Replaced the fuel pump at the beginning of this summer, car ran good until suddenly a busted fuel line. Fixed that then 5 minutes later another busted fuel line (under the car) At the same time, my charcoal canister starts to overflow with gas. Just wondering if anyone knows whats going on? My belief would be that the lines on the fuel pump are hooked wrong (Possibly the vent and return maybe?) Seems as though its building up pressure which led to the lines bursting. The pressure may also cause the gas to be forced from the tank to the charcoal canister. To make the best of things, the car now runs terrible again, i heard the pump whining when i last shut it down so i think the pump may be toast. No pressure on the fuel rail and no noise when i unscrew the gas cap. ANY HELP PLEASEEEEE. I want to get this car on the road! I'm thinking about taking the canister out altogether and replace the fuel pump again. The lines i thought were hooked up wrong but is there any way 2 can be switched and causing all this?
Replaced the fuel pump at the beginning of this summer, car ran good until suddenly a busted fuel line. Fixed that then 5 minutes later another busted fuel line (under the car) At the same time, my charcoal canister starts to overflow with gas. Just wondering if anyone knows whats going on? My belief would be that the lines on the fuel pump are hooked wrong (Possibly the vent and return maybe?) Seems as though its building up pressure which led to the lines bursting. The pressure may also cause the gas to be forced from the tank to the charcoal canister. To make the best of things, the car now runs terrible again, i heard the pump whining when i last shut it down so i think the pump may be toast. No pressure on the fuel rail and no noise when i unscrew the gas cap. ANY HELP PLEASEEEEE. I want to get this car on the road! I'm thinking about taking the canister out altogether and replace the fuel pump again. The lines i thought were hooked up wrong but is there any way 2 can be switched and causing all this?
Junior Member
Joined: Jul 2009
Posts: 68
Likes: 0
From: Oregon
Car: 92 GMC Sierra 2500
Engine: 5.7l
Transmission: 4L70
Axle/Gears: GT4 3.73
Re: car is ticking time bomb!
Note there is a fuel pressure regulator and the fuel system is actually quite complex. Here is service information...
http://www.asashop.org/autoinc/june98/techtotech.htm
The *right* way to troubleshoot these problems is to test various things for the correct pressure using a fuel pressure gauge. And along with this testing, the most important tool is a factory service manual set which you can order from your dealer or here...
http://www.helminc.com
The factory service manual set will tell you what to test, how to test, what the test results should be, and give complete instructions on replacing parts.
The most best thing about these books is they tell you where various components are located.
http://www.asashop.org/autoinc/june98/techtotech.htm
The *right* way to troubleshoot these problems is to test various things for the correct pressure using a fuel pressure gauge. And along with this testing, the most important tool is a factory service manual set which you can order from your dealer or here...
http://www.helminc.com
The factory service manual set will tell you what to test, how to test, what the test results should be, and give complete instructions on replacing parts.
The most best thing about these books is they tell you where various components are located.
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