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  1. #1

    1996 polaris slx780 no compression 1 cylinder

    I did a compression test on all three cylinders and had 107 on two and zero on the third.
    I pull the cylinder off and looked at the rings and they looked good the sleeve is clean. Did I screw up the connecting rod bearing?

  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Jul 2007
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    107 PSI seems low on the other two cylinders.

    When checking compression, throttle must be held wide open, all spark plugs out.

    Can you see or feel any vertical play in the zero PSI piston?

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