Low Compression
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Thread: Low Compression

  1. #1
    Frequent Poster Majorpain27's Avatar
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    Apr 2010
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    Low Compression

    I have a low compression reading on my ski of about 45/40 (88' js550). The ski runs but I know compression issue can lead to death! Where do I start to try and find my problems?

    head gasket?

    bad rings? pistons? How do I tell?

  2. #2
    PWCToday.com Is My Home Away From Home Tom V's Avatar
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    Dec 2003
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    Re: Low Compression

    Pull the head and see what the cylinders look like, can you still see cross hatching? Does the cylinders look worn out and scored up? Go from there and make a decision to hone and re-ring or bore it and new piston and rings.
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