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Thread: Leak Down test

  1. #1

    Join Date
    May 2007
    Lake Texoma, TX

    Leak Down test

    How do you do a leak test once the motor is back together?? My polaris service manual did not have a thing on it??


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Cleveland OH
    Plug up all openings. Exhaust pipe, intake maniflod, (or carbs if mounted) spark plugs tightened etc... Seal it up air tight. Then put a vacuum or pressure (9 lbs.) through the pulse line fitting. See how long the vac/psi holds for. It should hold for a few minutes, if not you have a leak you need to find it, soapy water helps. Most common area to look at are crank seals and gaskets.

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