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#1
06-08-2010, 10:07 PM
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1998 5.7 losing fuel prime
Hey all, I have a 98 Chevy 1/2 ton, 5.7L and it seems that after sitting for a few hours it is losing fuel prime in the rail. After sitting for a few hours, I pressed the schrader valve in the fuel rail, and there was no pressure. Any ideas on where the pressure is going? Is there a check valve in the fuel rail to stop the fuel from draining back into the lines/tank?
Any input would be great. Thanks 
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#2
06-08-2010, 10:34 PM
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Re: 1998 5.7 losing fuel prime
Most likely the fuel pressure regulator (FPR) but it could also be the fuel pump or a leaking poppet of the injector.
The FPR is a very common issue. //2000CAYukon
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#4
06-14-2010, 08:50 AM
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Re: 1998 5.7 losing fuel prime
Quote:
Yeah man, FPR is almost assuredly the issue here. -
__________________
1968 427 Camaro SS 1998 Silverado K1500 2004 Corvette Coupe 2011 Chevy Avalanche ______________________
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#5
06-14-2010, 10:24 AM
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Re: 1998 5.7 losing fuel prime
It has 0 pressure after a few hours? I dont know if I'd be too worried about 0 pressure after 2 hours. If pressure drops to 0 minutes or immediatly after, then you have a problem. Are you having a drivability problem?
__________________
-2000 Grand Prix GTP 170,000mi (daily driver) -2000 Olds Alero 100,000mi (soon to be DD with gas at $3.45/gal) -1997 Chev K1500 4x4 115,000mi (Natalie's truck [nans_grandprix]) AF "2.0" Community Guidelines Conservative Victory 2012!!! "I'll Keep my Guns, Freedom, and Money. You can Keep the Change!" ----->>>>> Did You Know? <<<<<-----
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