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  1. #1

    Spark plug fouling?

    I have a spark 60 hp with Vtech 402 Beta software in it and it have now fouled the spark plug on cylinder nr 3 for the second time, only thing i can think of is a faulty injector unless it is the vetch software giving me problems.

    Have anyone else had issues like this with your sparks?


  2. #2
    SLASHER's Avatar
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    I have done 2 Spark 60hp with the 402 tunes and no issues and 2 Spark 90hp with no issues with the same tune ...

    Must be an a issue with ski , may be faulty coil ??? Try moving coil to another cylinder to see if follows or even injector ...

  3. #3
    GasResearch-VT.SE's Avatar
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    I've got a ski here with similar problem... Looks like coil not igniting, easy to check.

  4. #4
    It was the ignition coil, when cold the ski ran great but after a few passes it lost a sylinder. Let it sit for a little while and all was good again for a little while. Replaced the coil on the cylinder not running and now it runs without issues.

  5. #5
    JohnSWE's Avatar
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    Great to hear!

  6. #6
    Quote Originally Posted by normann View Post
    It was the ignition coil, when cold the ski ran great but after a few passes it lost a sylinder. Let it sit for a little while and all was good again for a little while. Replaced the coil on the cylinder not running and now it runs without issues.
    Im still having issues with this machine, it ran fine for a few hours then it started again loosing a cylinder,
    This time i changed all the spark plugs and coils and this season it ran fine again for a couple of rides then back to the same issue only running on 2 cylinders.
    Does anyone have any idea what can be causing this??

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