1994 Vortec W code . I have replaced fuel pump, filter, regulator, and nut kit. Old regulator was drowning the poor thing. I have good pressure with no bleed down at fuel filter. However, at check valve at back of manifold it reads over 60 psi initially but bleeds off down to about 32-36. Rate of bleed down slows as it gets lower. I can find no evidence of leaking fuel neither in manifold nor anywhere in the lines all the way to the tank. Very frustrating. If anyone can offer some guidance would be awesome.
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94 jimmy fuel pressure loss
- Thread starter michael j
- Start date
shaynehardy
New member
take the injector out but still connected and try again on the bleed down test, some fuel will bleed back to the tank but check to see if injectors are sticking open