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Suddenly No SPARK

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  • Suddenly No SPARK

    OUT RUNNING AROUND THIS WEEKEND. MY STARBOARD MOTOR WAS VERY HARD STARTING. A LOT OF CRANKING BEFORE SHE FIRED UP. NEXT DAY SAME THING BUT FOUND NO SPARK AT THE PLUGS AND WOULD NOT START. ANY SUGGESTIONS?

  • #2
    The ignition system would have to be tested with a peak reading volt meter. You would need a Yamaha service manual and a peak reading volt meter.
    Regards
    Boats.net
    Yamaha Outboard Parts

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    • #3
      Speeder,
      If you have no spark on any of the four plugs, then you might try swapping the CDI unit with the other motor - that's the nice thing about having a twin setup, you have a complete set of known good parts to help you troubleshoot.
      Good luck,
      Ken K
      Beaumont, TX

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