grinding noise
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Thread: grinding noise

  1. #1
    PWCToday Newbie
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    Jun 2019
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    Casco MAINE
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    grinding noise

    Hello everybody

    97 stx 1100 2 stroke

    i took her out for a cruise last night and noticed a pretty decent grinding noise at lower rpms. I didnít think much of it as Iíve owned it for 3 weeks and itís my first ski

    i took it out again today and am now experiencing loss of power at low rpms, along with the grinding noise. Sometimes for a split second or two the grinding noise is very loud and scary... almost as if something is going to explode or snap lol

    at WOT I can barely do donuts because the ski wonít get out of its own way. (This was not the case the past 2 weekends)

    i filled the oil oil tank last night with the Kawasaki 2 stroke oil, along with a full tank of fresh gas

    Last weekend I could get her up to 55, today the most I saw was 38mph. Along with hesitation, and this grinding sound. The grinding noise goes away after about 10-15mph. But still doesnít have the power I experienced before. It sounds and feels like itís coming from the middle to the rear. I took the seat off and didnít notice anything loose. A inch of water at the bottom of the hull. The shaft that comes out of the rear of the motor that goes to the impeller, moves in and out while applying/pumping the throttle. Is that normal ?



    i am having a hard time finding threads specific to the stx model.
    Any information as to what I can to to check I would appreciate. Any information whatsoever would be extremely appreciated

  2. #2
    I dream skis matt888's Avatar
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    Apr 2005
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    547

    Re: grinding noise

    Sounds like a pump issue to me but I am not familiar with your model ski, someone will jump in shortly to help.

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  3. #3
    PWCToday.com Is My Home Away From Home bandit88's Avatar
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    May 2014
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    Re: grinding noise

    I agree, pull the cone off the back of the pump and see if there is any water or chunks of bearing it in. If there is, then its time to replace the pump bearings and seals. If there isnt, the pump could still be an issue, but that is a quick and easy check.
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