gsx rfi starter won't turn engine over
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  1. #1
    PWCToday.com Is My Home Away From Home kcr357's Avatar
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    gsx rfi starter won't turn engine over

    Tried 3x starters, oem, new, no difference.
    Tried different batteries, jump box, using a car battery plus the ski battery, nothing.
    Tried bypassing the stock wiring with cables to eliminate possibility of corroded starter/negative battery cables, nothing.
    Engine spins freely, no hangups, starts up fine when I can position the engine at the perfect spot to allow momentum to get it turning over, but any other time it'll spin the engine to tdc then nothing.
    Tried bypassing the solenoid, nothing.
    Next step is setting ski on fire.
    How many gerbils could a gerbil jammer jam if a gerbil jammer could jam gerbils?


    "You build cheater motor's & still get smoked !!!!"
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  2. #2
    I dream skis
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    Re: gsx rfi starter won't turn engine over

    So, sometimes it starts ok, but other times perhaps most times, it does not start?

    When yu try to start it and nothing happens, do you get any sounds or anything? buzzing, humming, wires heat up? anything at all?
    2, 1998 TS 770 L, restored and running great as of July 2019 (NO THANKS to the person at SBT, who put the WRONG crankshaft bearing into the rebuilt engine I got from them)

  3. #3
    PWCToday.com Is My Home Away From Home kcr357's Avatar
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    Re: gsx rfi starter won't turn engine over

    It'll try to turn over every time. If the pto is turned so the piston is midway between top and bottom, it'll get enough momentum to spin. It *will* sometimes, when it does start spinning, quit turning over even if the button is still depressed
    Last edited by kcr357; 06-05-2019 at 08:55 PM.
    How many gerbils could a gerbil jammer jam if a gerbil jammer could jam gerbils?


    "You build cheater motor's & still get smoked !!!!"
    "Its not your fault. You just don't understand what you're talking about. "

  4. #4
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: gsx rfi starter won't turn engine over

    Check your injector spray. Maybe it's hung wide open and almost hydrolocking with fuel????
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
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    '99 Yama GP1200 65U 61.8 GPS
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    '96 Seadoo HX 717 53.13 GPS
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  5. #5
    I dream skis
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    Re: gsx rfi starter won't turn engine over

    Try to give us a better idea of what is happening

    Senarios;
    1. Does the starter motor continue to spin and the engine stops? OR

    2. Does the engine jerk to a stop and the starter stalls? OR

    3. Does the engine come to a slow stop, like that starter has stopped trying to turn it? OR

    4. If something else happens, try to explain...

    Possible issue for each senario;

    1 Missing teeth on the flywheel OR a damaged bendix clutch? You mentioned you tried 3 starters, does this model have a separate bendix? or are you using the same bendix with each starter?

    2. Something in the engine forces it to stop.. Perhaps as mentioned above, hydrolock or something?

    3. Some electrical issue not yet discovered.

    4. ???
    2, 1998 TS 770 L, restored and running great as of July 2019 (NO THANKS to the person at SBT, who put the WRONG crankshaft bearing into the rebuilt engine I got from them)

  6. #6
    PWCToday.com Is My Home Away From Home kcr357's Avatar
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    Re: gsx rfi starter won't turn engine over

    Not hydrolocking, it had the same issue on the bench.
    The starter engages, piston comes to top dead center, then starter is unable to spin engine past tdc. If the battery is JUST coming off the charger it might spin normally the first time. After that same issue. Again, tried several batts, jump box, car battery, etc.
    How many gerbils could a gerbil jammer jam if a gerbil jammer could jam gerbils?


    "You build cheater motor's & still get smoked !!!!"
    "Its not your fault. You just don't understand what you're talking about. "

  7. #7
    I dream skis
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    Re: gsx rfi starter won't turn engine over

    Can you spin the motor past TDC by hand?

    Do you have an amp meter, you check the current draw when the started is trying to turn the motor over?

    What happens when you try to spin, with the plugs out?
    2, 1998 TS 770 L, restored and running great as of July 2019 (NO THANKS to the person at SBT, who put the WRONG crankshaft bearing into the rebuilt engine I got from them)

  8. #8
    PWCToday.com Is My Home Away From Home kcr357's Avatar
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    Re: gsx rfi starter won't turn engine over

    Yes
    No
    Spins normally
    How many gerbils could a gerbil jammer jam if a gerbil jammer could jam gerbils?


    "You build cheater motor's & still get smoked !!!!"
    "Its not your fault. You just don't understand what you're talking about. "

  9. #9
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: gsx rfi starter won't turn engine over

    Try spinning it with a fully charged battery. Meter attached to battery, and watch voltage drop. Let us know.
    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

  10. #10
    I dream skis
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    Re: gsx rfi starter won't turn engine over

    If everything checks out mechanically, I believe you need to focus on electrical issues. You need a clamp on amp meter, something like this, https://www.amazon.com/Voltcraft-VC3...-1-spons&psc=1

    MAKE SURE, you get one that can measure DC, many you see online look the same, but cannot measure DC.

    Without it, you are driving blind trying to fix your problem.

    Good Luck

    ps... Maybe there is a gerbil stuck in it..
    Last edited by hemmjo; 06-06-2019 at 10:04 AM.
    2, 1998 TS 770 L, restored and running great as of July 2019 (NO THANKS to the person at SBT, who put the WRONG crankshaft bearing into the rebuilt engine I got from them)

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