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  1. #1

    8.1L's with Loose Intake Manifold Bolts??

    GM is having trouble with the intake manifold bolts on the 8.1L's loosening up. Apparently a new service bulliten calls for the bolts to be retorqued with the use of thread locker. Here's some more info.

    Has anyone had this problem on a marine 8.1L?

  2. #2
    Platinum Member Platinum Member CigDaze's Avatar
    My Boats:
    Cigarette 35 Cafe Racer
    Join Date
    Jun 2001
    St. Petersburg, FL
    Never heard of such a problem with the marine versions.

    I'm happy to report that I have no appreciable oil consumption.

  3. #3
    Charter Member #943 OnTheBay's Avatar
    Join Date
    Feb 2001
    Bowleys Quarters, Maryland
    My 2001 Suburban would go through a quart of oil every 1,500 miles. My new 2002 Avalanche has 2,500 miles on it so far and no oil loss yet. Got my fingers crossed. Thanks for the info I will keep an eye on the situation.


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