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Need confirmation on my issue

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  • Need confirmation on my issue

    2090 hp Yamaha. Idles rough stumbles installs. Compression check was 120, 107, 120. Carbs are redone check for water in fuel and the spark plugs. How do I determine the piston is bad and what's next? Is this the culprit?

  • #2
    buy inspection camera

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    • #3
      A leak down would be next

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