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  1. #1
    Sea Doo This coming4yah!!'s Avatar
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    Sea Doo Question

    New to forum but not new to ski's, have a RXT with a loud knock at 4k RPM, anyone ever had this happen?


  2. #2
    JFizzleJR's Avatar
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    any idea where the noise is coming from? does the ski sputter/hesitate when you hear the knock? I had a sputter at 4k RPM and a loss of RPM at full throttle when a fuel injector stopped firing correctly. First thing I would do is check under the ski with a light to see if there's any damage to the driveline (wear ring, prop) or anything stuck.

  3. #3
    If i knew,...I wouldn't ask sea-one's Avatar
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    what year boat?

  4. #4
    Richieb's Avatar
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    Sounds like the engine is in need of bearings in the balancer/crank area. This is where it usualyy shows first... if it is coming from the engine area?

  5. #5
    Sea Doo This coming4yah!!'s Avatar
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    it doesn't sound like the engine and when I hook it to the hose in the driveway, all is good, nothing, only on the water. no loss of performance but can't take the seat off and run it over 4k rpm, it's driving me crazy!

    Our boat is 96 Speedster

  6. #6
    Sea Doo This coming4yah!!'s Avatar
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    I was told to check the rod, possibly coming through so will check that and see.

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