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  1. #1
    PWCToday Newbie
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    98 seadoo gsx limited intermittent starting issue tried everything

    So i have replaced/tested everything I can possibly think of on this thing... I put key on dess post with no beeps. Beeper hasn't worked in years. Sometimes it starts and doesn't have issue for hours. Never has turned off in it's own. When it will not start, I have tested wiring going to solenoid, and no voltage. Jumping out solenoid obviously makes engine turn over. I have tested dess post at the mpem, replaced post, replaced mpem, verified continuity on every fuse on the ski, verified power and grnds at mpem, verified connection to solenoid signal wire. I am lost at this point. I have regrounded everything on the entire ski. I live in Richmond, va and there isn't even a shop around here competent enough to program a key

  2. #2
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    Start/stop switch tested correct everytime, even in no start condition. Gauges come on as soon as key is out on post, as well. Every single time I hit start/stop button I hear rave solenoid cycle. Thought it was starter solenoid at first but I verified no voltage on signal side when depressing start button. Also verified ground to solenoid signal, coil, mpem

  3. #3
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    Honestly I'm thinking of just wiring it for Microsquirt ignition side only or electromotive xdi unit and running 787 rectifier back to battery. This ski just seems unfixable with mpem

  4. #4
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    So as an update... I realized I was reviewing 98 gsx wiring diagram, not the 5625 97.5. I noticed there was something called an amplifier that the dess post runs through. Wires were stretched tight, almost ripped out. After jiggling them around I heard my rave valve solenoid cycling repeatedly. Replaced the amplifier and seems to be fine now. Of course the problem is intermittent, so I'll find out for sure this weekend. Does this seem logical Or have y'all ever heard of this?

  5. #5
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    Good talk lol!

  6. #6
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    Lol, sometimes you need to talk it out.
    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

  7. #7
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    So that didn't fix it... I'm ****ing lost... any ideas?

  8. #8
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    The 951 setup does goofy things with a bad battery. It sounds like you have a flaky mpem but i would try a new AGM battery first.
    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

  9. #9
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    Thanks for the reply, I have tried new battery (12.8 volts) and replaced mpem ($420) with new key and EXACT same issue. Man, I hate the intermittent problem...

  10. #10
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: 98 seadoo gsx limited intermittent starting issue tried everything

    Does it make a clattering sound while it is running?

    Quote Originally Posted by JDMEFn View Post
    Sometimes it starts and doesn't have issue for hours.
    What issue? Does the engine stop for seemingly no reason??

    Quote Originally Posted by JDMEFn View Post
    Never has turned off in it's own.
    Do you mean that the engine keeps running after you pull the lanyard or hit the kill
    button?


    Bill M.
    Horsepower == Speed, RPM != Speed



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