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loose spark plugs

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  • loose spark plugs

    had a 100 hour service on a 300 hp motor. After four hours of use one of the plugs blew out and broke the coil pack. Is this a common problem with this size motor or is it a problem with the mechanic that the job.

  • #2
    It would be my guess whoever put the spark plugs in didn't tighten them, or.... over tightened one, and stripped the thread.

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