fuel pump drainback valve not working

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Apr 8, 2010 | 04:59 PM

Husker_1995

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Heel & Toe

Joined: Apr 2010

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fuel pump drainback valve not working

Hello,
My car loses fuel pressure after sitting and it was diagnosed as a bad fuel pump. Car is a 2001 Corvette. Runs fine other than losing pressure and is hard to start after sitting. I've heard that these pumps have an anti-drainback valve inside. Do I have to replace the fuel pump itself to fix this or is the drainback valve in the assembly somewhere? Does anyone have a diagram?

thanks

Apr 8, 2010 | 05:09 PM

dougbfresh

Le Mans Master

Joined: Nov 2005

Posts: 6,993

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I don't think so. There were also 2 fuel systems in the C5. The early cars had a return line to the tank the later cars had a single line. Probably a leaky injector staying open after the car is off.

Apr 8, 2010 | 06:55 PM