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  1. #1

    SVHO Engine Problem

    2021 FX SVHO

    Engine ran fine since 62 Hours. Stage 1 Plus

    Engine starts to shake, i pulled the Coils each after each while engine is running and no change on Cylinder #4 so the engine is running on just 3 cylinders

    All Spark Plugs are just on 2 Hours run time. I put in a other spark plug and an other coil from an other engine no change.

    - Compression is same as all the time when checking
    - Spark is there on cylinder #4
    - Cam Shafts are ok and not broken, chain everything looks and turn perfect
    - no mechanical noises
    - i changed one injector from cylinder 1 to 4 as well no change


    what could be here the Problem ??? Thanks


    What could be here the Problem ?


  2. #2
    Check the injector harness.

  3. #3

    Join Date
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    There have been some that have electrical wiring harness connections at the injector break off. Sounds like your issue but confirm. Someone had some pics on here at some point.

  4. #4
    ShawnInFL's Avatar
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    Quote Originally Posted by thomasdjames1 View Post
    There have been some that have electrical wiring harness connections at the injector break off. Sounds like your issue but confirm. Someone had some pics on here at some point.
    That was me, bet that's what it is too. Just wiggle that dead cylinder injector harness while motor at idle. If that's it, careful. Repair the harness however you choose but you could do ECU damage with the short at the harness when running. Now you know where to go next time you get a miss on that ski.

    Keep us posted
    Here's the thread with pics.

    http://greenhulk.net/forums/showthread.php?t=291882

  5. #5
    Well were same issue as yours. one Pin broke some how Thanks

  6. #6

  7. #7
    dannyual777's Avatar
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    Quote Originally Posted by FAMT View Post
    Well were same issue as yours. one Pin broke some how Thanks
    Awesome that you were able to use the information that other GH members gave you, find and confirm the problem and then fix it! All of this information could/will come in handy for any of us in the future.

  8. #8
    ShawnInFL's Avatar
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    Quote Originally Posted by FAMT View Post
    Well were same issue as yours. one Pin broke some how Thanks
    Glad you were able to find the problem. It could certainly be a lot worse. Don't be surprised if it happens again but at least you know how to diagnose the problem when it occurs. Just a thought for anyone else that reads this thread. If you find yourself out and about on the water and discover a pin is broken, probably better off disconnecting the harness than riding back with it shorting out. Perhaps others have opinions they will share.

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