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  1. #1
    PWCToday Newbie
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    Jul 2017
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    Mesa, AZ
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    92 and 94 SP trouble shooting

    Took my new to me skis to the lake over the weekend. Both start and idle no problem until I get them near the water (face palm) both suddenly develope an apparent fear of water when they get on the boat ramp.

    The 94 does start with some effort and run, but struggles to get up to speed once on the water. I believe it might be a gummed up fuel selector but I am unsure. It's almost like a slipping clutch feeling as you go beyond half throttle. Is it just not getting enough fuel? Or could this be some kind of drive line issue?

    In the case of the 92 it simply doesn't start as soon as it gets on the ramp. It's almost as tho it's getting no fuel/oil. No smoke, doesn't appear to fire at all just turns over.

    Going to go thru the fuel lines on both, probably replace the lines and see if the selector/carbs need any work. Any other suggestions on what I might be missing?

  2. #2
    I dream skis
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    Re: 92 and 94 SP trouble shooting

    Start with a compression test.When where the carbs rebuild last.

  3. #3
    PWCToday.com Is My Home Away From Home Cliff's Avatar
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    Re: 92 and 94 SP trouble shooting

    That slipping clutch feeling translates to needing a new wear ring in the pump.

    The gap if more than 1mm as measured with a feeler gauge between the wear ring and the impeller's trailing edge (from the rear of the pump) will mean that the pump is not being allowed to pressurize enough due to the gap to provide the forward thrust needed to provide efficient movement.

    Call it "water blow by" if you will.

    A clean & properly working fuel system in any older Sea Doo is very important as it will not cause starting or throttle issues.

    I would start by pulling the carbs completely apart and rebuilding them with Mikuni parts kits.

    Download the manual for your year/make Sea Doo at the top of this section and read through it. It will be of great help and understanding of the systems involved and how to maintain them.




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  4. #4
    PWCToday Newbie
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    Re: 92 and 94 SP trouble shooting

    Alright so I am trying to check the wear ring, but I'm not coming up with much. It doesn't appear to have much of a gap.

    I am changing all of the fuel lines and cleaned up the carb as well as I could. Stripped the inner screws and couldn't remove them. That little screen was beyond dirty.

  5. #5
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 92 and 94 SP trouble shooting

    Shine a light up into the jet pump at the impeller and get a pic for us. Im betting the rubber on the wear ring is completely gone.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

  6. #6
    PWCToday Newbie
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    Re: 92 and 94 SP trouble shooting

    The 94 is gonna get a new ring. Sold the 92. Got a bunch more fun projects I should probably post about in a fresh thread.

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