Question about 1995 GMC Jimmy

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I have a 1995 GMC Jimmy that won't start.

I have a 1995 GMC Jimmy 4x4, 4.3 Vortex V6. It doesn't start without squirting gas into the manifold. Once it starts, it runs like a top, but every time you have to squirt the fuel into the intake manifold. The fuel filter has been changed and the fuel pressure was checked is okay. Anybody know what could be causing this? Thanks

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  • ibtyping4u Sep 06, 2009

    Don't know. The mechanic told us the psi was AOK, 60 pounds or better. He said it was the fuel filter and replaced it. It started for one day and then every day after it won't start unless you squirt fuel in the manifold. Talked to the mechanic again and he said it was probably the fuel injectors. If it were the injectors, wouldn't they act up even after the car is running? Runs great once it starts.

  • ibtyping4u Sep 06, 2009

    I will check this out and will post results. Sure appreciate the help.

  • mike loshbough
    mike loshbough May 11, 2010

    What is the fuel pressure psi?



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Did you ever solve your Jimmy's hard starting issue? What was the problem and the related fix? Please help those of us who are still fighting this problem.


Posted on Oct 26, 2009

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It sounds like a faulty fuel pressure regulator. When you turn the key to the on position the fuel pump starts for an instant to build pressure in the fuel line. If the pressure regulator has allowed too much leakage since the last start then the fuel pump does not have enough time to prime the line. The fuel pressure will still measure ok when the car is running because the leakage is very low. Try turning the key off and on a few times prior to starting and see if the extra pump priming steps help. Also check the vacuum line to the regulator because it needs vacuum to work correctly.

Posted on Sep 06, 2009

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I believe

diy32 may have fixed it for just about everyone thanks you diy32 and God Bless

Posted on Dec 01, 2014

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