Question about 1998 GMC Jimmy

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1998 jimmy 4.3 fuel pressure leaks down over a few hours

Hard to get it started, you have to turn the switch on and off four or five times to get the fuel back up to the csefi, wifes car please help she has my truck

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  • mccandless_m Sep 09, 2009

    fuel pump is less than one year old and has new fuel filter pressure gauges read within spec when first connected and then bleeds off after engine is turned off bleed off is fairly slow

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  • GMC Master
  • 6,674 Answers

Have you tried a new fuel filter, otherwise, or in addition you may have to have the fuel pressure tested to see what the pump condition is.

Posted on Sep 09, 2009

Testimonial: "thanks for your advice will check further"

  • Mike Butler
    Mike Butler Sep 09, 2009

    So it has proper fuel pressure as soon as key is turned to on the first time, or does it need to be cycled as you said, 3 or 4 times to reach proper fuel pressure?

  • Mike Butler
    Mike Butler Sep 09, 2009

    Keep me posted, as My curiosity still leaning toward pump, or leak in system somewhere.
    Tell me, if driven for a fair distance then shut off, and say restart 10 -15 minutes later, what does it do?


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