F12X slow crank/no crank intermittent
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  1. #1
    PWCToday Newbie blackhecilopters's Avatar
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    F12X slow crank/no crank intermittent

    2004 F12X. New main relay, new ECU. Runs great and starts right up usually. Seems like sometimes it will crank 180 degrees or just a little and then you need to let off the starter and go back a few seconds later. It has done it cold and warm, acts like the starter has a bad connection. Could this be the actual starter? solendoid? rectifier? Anyone with experience?
    Last edited by blackhecilopters; 06-03-2019 at 09:58 AM.

  2. #2
    PWCToday Newbie blackhecilopters's Avatar
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    Re: F12X slow crank/no crank intermittent

    I am thinking this could be the starter relay inside the black electrical box in the back of the hull. Any input?

  3. #3
    PWCToday Newbie
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    Re: F12X slow crank/no crank intermittent

    get a multi meter with an amp function. start at the battery and move your way towards the starter. See where the amp loss is

  4. #4
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    Re: F12X slow crank/no crank intermittent

    get a multi meter with an amp function. start at the battery and move your way towards the starter. See where the amp loss is. here https://www.freeasestudyguides.com/s...draw-test.html

  5. #5
    Top Dog spatera's Avatar
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    Re: F12X slow crank/no crank intermittent

    Also check the ground wire for corrosion. You seem capable but I'd still check the simple stuff like connections before you start throwing parts at it.
    07 Honda F12X Saphire Blue
    MacBoost, Large intercooler, solas intake grate and impeller.

    03 Honda F12X Red

    Jim's Alpha Boost kit, H2O ECU Modulator, Large Intercooler, Solas intake grate and Impeller

    05 SeaDoo GTX 4-tec Supercharged

    Used to have:
    98 GP760, 97 GTX Sea Doo, 97 GP1200, 02 Honda F12X, 2-03 Honda F12X,

    Need to have:
    F15X

  6. #6
    PWCToday Newbie blackhecilopters's Avatar
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    Re: F12X slow crank/no crank intermittent

    What if I jump the two connectors inside the electrical box?

  7. #7

    Re: F12X slow crank/no crank intermittent

    I had to ski I bought doing something very similar and after a few days of messing with it checking everything it ended up being the ground wire had burned against the block but you couldn't see it cuz you had to take off a bunch of crap to get to where the ground wire connects to the block. A quick test would be good a good ground wire connect it to a clean bolt on the block somewhere and run it to your battery and see.

    Banjomaniac

  8. #8
    PWCToday Newbie blackhecilopters's Avatar
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    Re: F12X slow crank/no crank intermittent

    Put a new starter relay in and seems to have fixed it. Will use it this weekend and report back on whether it's long term or not!

  9. #9
    PWCToday Newbie blackhecilopters's Avatar
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    Re: F12X slow crank/no crank intermittent

    Relay was not the fix. Currently have replacement starter en route. The stock one was corroded and the brush holder had rust on it internally.

  10. #10
    PWCToday Newbie blackhecilopters's Avatar
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    Re: F12X slow crank/no crank intermittent

    Update: Turns out it was the starter all along. Got a Chinese built one for $55. Hopefully it lasts.

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