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  1. #1

    GP 1200 R cylinder compression @ 125

    Just had potential waverunner compression checked, all 3 cylinders are at 125PSI.

    Can't find the stock PSI numbers online, can anyone provide?

    Its a 2000 Millenium GP 1200 R with 150 hours, looks completely stock. Doesn't look like the head has been pulled before.


  2. #2
    zx11rider's Avatar
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    that sounds good for a 150 hr machine

  3. #3

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    has long has it was a reliable comp test gauge, those are great numbers, no worries

  4. #4

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    Question ? you did hold throttle while cranking to get most air in correct?

  5. #5
    WATER WOODY's Avatar
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    Welcome to the forum. Your compression is spot on. What guage you using?

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