2000 Sea Doo 717 no compression - Page 2
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  1. #11
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 2000 Sea Doo 717 no compression

    You won't really know without a full teardown. But, by the looks of those pistons, it appears that water sat in it for a while. Better to tear it down and find out for sure.
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  2. #12
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: 2000 Sea Doo 717 no compression

    720 engine failures from rust damage used to be common. The
    oem small end bearings (had about ~31 individual roller pins), and
    1 or more would break and they would scatter throughout the
    engine.

    Chances are good that 1 or more main bearings, lower end
    rod bearings are rusted. The lower end rod bearings will
    rust on the bearing surfaces or the rollers, and it is near
    impossible to know just how bad the rust damage is by
    a visual inspection.

    Rust damage to the small end of the connecting rods is
    easy to determine.

    But predicting how long before a connecting rod or main
    bearing is going to fail isn't easy. I have been surprised at
    how long some people get by with a bad crank.

    I am not trying to encourage ignoring rust damage.


    Bill M.

    Take some pictures of the piston skirts. Something caused a
    failure that led to the rusted top end. Inspect the rotary valve
    cover for water damage.

    Find a trusted source for the main seals.
    Last edited by wmazz; 07-24-2022 at 02:44 AM.
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  3. #13
    PWCToday Regular
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    Re: 2000 Sea Doo 717 no compression

    I appreciate the expertise. Forgive my ignorance. Does the replacement of the main and rod bearings require the rebuilding of the crank?

    I will pull the motor and show picks as I get it apart. Thanks

  4. #14
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: 2000 Sea Doo 717 no compression

    [QUOTE=pbob42;4597977]I appreciate the expertise. Forgive my ignorance. Does the replacement of the main and rod bearings require the rebuilding of the crank?

    Rebuilding a crankshaft on a PWC involves replacing all the bearings and the rods, it's a specialized process that you need all the correct tools to accomplish
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  5. #15
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    Re: 2000 Sea Doo 717 no compression

    I'll pull it out and see what I got.

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