i think their is a check valve in the fuel pump, maybe he needs a new fuel pump. when running it holds pressure because it always pumping/
97 starting problem
Helping a neighbor try to get a 97 started that a guy dropped off at his shop. It has new GPR, Plugs are working. It will start cold with a shot of either, BUT after warm, it will start. It seems as if its a fuel problem, but there is no white smoke while cranking. Once its running, it seems to run OK. It has about 45# fuel pressure at the schrader valve while idleing. Any thoughts?? Oil level is good, etc. One other question, after it runs and you shut it ff, the fuel pressure drops off to nothing on the gauge. Is that normal? We checked my truck, and there was nothing when we hooked it up, it had 60# when idleing, and stayed up after engine off. Thanks
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it you replace the fuelpump be carefull not to drop the plunger . it not holding by much just the oil around it. it it falls off it could go into the oil pan and you have to get it out.
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