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  1. #1
    race24x's Avatar
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    Old Sea Doo burned hole in piston

    I didnt find anything with a quick search so I thought I would throw this out there. Old 583 (I think) motor burned a hole in the top directly under the sprk plug right threw the piston. Other side looks OK. Is this a lean condition or deto or what do you think caused it?


  2. #2
    dghal's Avatar
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    time to look at the fuel system.. grey fuel lines?

    sounds like it was lean,, could be detonation.

    how about a little history,

    time on machine
    Fuel and mix? and age of fuel?
    what was going on when failure happened?

  3. #3
    KrunchovXPL-GTX-RX's Avatar
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    Good points.

    The off-the-cuff guess would be deto at the spark plug. It could be from a lean condition or the wrong plug.

    Could have been a crappy piston too. Do you know if had been rebuilt, or if was the original engine.

    If someone had been into it you could also consider improper Rotary Valve timing.

  4. #4
    race24x's Avatar
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    I will look more into it to see about some of the questions. Its not mine so I dont know much yet.

    GDHAL your picture in your profile makes me feel bad LOL I mean feel good but the whole thing is so wrong hehehehe

  5. #5
    Work Harder, Millions on Wellfare Depend On Us! ultramaxracing05's Avatar
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    Quote Originally Posted by race24x View Post
    I will look more into it to see about some of the questions. Its not mine so I dont know much yet.

    GDHAL your picture in your profile makes me feel bad LOL I mean feel good but the whole thing is so wrong hehehehe


    hahaha yeah his icon is pretty unique. Its funny too

  6. #6
    dghal's Avatar
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    Quote Originally Posted by ultramaxracing05 View Post
    hahaha yeah his icon is pretty unique. Its funny too


    a whole new view on religion huh?

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