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  1. #1
    speel chekk this fokker! Charter Member puder's Avatar
    My Boats:
    27' Scarab
    Join Date
    Feb 2001
    Locust Valley, New York

    gmc 5.7 1500 pickup question

    what should idle oil PSI be? I replaced a blown intake gasket (she runngin again) but my oil PSI seem high 40 at idle and gos to around 60 when running. Running pressure seems normal but idle seems kind of high?
    Pardon me, while I whip this out!

  2. #2
    Gold Member Gold Member RebarBox's Avatar
    My Boats:
    05' Cobalt 343, 28' Cigarette a.k.a (Bicycle), 91' Ciglett, 08' Tahoe 215, plus some other crap.
    Join Date
    Apr 2003
    Grove, Oklahoma
    I have a 97 Yukon with 90,000 miles and it runs about 25 PSI at idle and a 00-3500 with 45,000 miles and it runs at 28-30 PSI at idle - both have 5.7's and engines have never been opened.

    If it helps.
    'Inez - Get them panties off' Quote - Roy D. Mercer

  3. #3
    Were doomed! Charter Member Wally's Avatar
    My Boats:
    Chris Craft Stinger 222
    Join Date
    Oct 2000
    Chicago, IL
    my 96 5.7 yukon idles at around 25-30 when hot...its about 40 at idle when cold....running is around 60 like yours......i wouldnt worry about it too much. Mine has 108K minles on it. My old dually never went below 40 at idle hot/cold....but then again i had that truck from day one and used nothing but Synthetic on her so i know hoe it was broken in.

    Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!

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