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Thread: mercruiser ign modules

  1. 06-23-2006, 09:26 AM #1
    Wicked Performance Boats
    How do you test merc ign modules for spark? Test lite lites at coil neg, but doesnot pulsate when cranking. Budlight
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  2. 06-23-2006, 03:26 PM #2
    Wicked Performance Boats
    I can't believe nobody knows how to troubleshoot a mercruiser thunderbolt ign system! Budlight
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  3. 06-23-2006, 03:46 PM #3
    502 JET
    Is the ignition a Thunder bolt IV?If so I can help.
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  4. 06-24-2006, 04:03 AM #4
    Wicked Performance Boats
    It's a thunderbolt V. BL
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  5. 06-24-2006, 06:17 AM #5
    502 JET
    The book I have is for the IV system.If you cant find out any info get a Seloc manual that covers your model year it will have step by step instructions on trouble shooting the ignition system.
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