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  1. #1

    00 Yam. GP 1200r Wont rev Past 3000 rpm.

    Just bought this ski and wont rev. past 3k, pump is in good shape, thought possible catalytic converter had plugged the exhaust but that was not the case. Comp. in all cylinders are 100psi, so motor does need a rebuild. Anyone have any thoughts on what else could cause this?

  2. #2
    Air restriction?

  3. #3
    JacRae's Avatar
    Join Date
    Apr 2007
    Ravena NY
    Check your powervalves for operation, and your cat converter.

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