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1991 Buick Regal Question: What should th fule pressure be?



jimz100, 3.8L V6, Palatine, IL, February 05, 2011, 10:58

Car won't start - cranks and has spark.

I measured the fuel pressure @ 40 psi, but don't know if this is within the operating range.

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  • Answer #1

    February 05, 2011, 16:00

    Fuel pressure should be 24-40 PSI with the key on, engine OFF. It shoud be 26-32 PSI running. If you have fuel injector OPERATION, not just fuel pressure and spark, and it won't start, I'd be suspicious of a timing chain problem, that the cam is out of time with the crank. Check the injectors for squirt.

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    jimz100, February 05, 2011, 19:21


    Thanks for your reply - I'll check "for squirt". If I have squirt, any easy way to check timing? If no squirt, then what's next?

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