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Old 06-19-2012, 04:12 PM
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Default Thunderbolt Tests

I have a gen IV Thunderbolt system on a 454/alpha combo in my Baja. Running a bunch of standard tests tonight but help me out, how do I check the unique parts of the merc system? Like the sensor in the distributor? How do I test if it is getting/sending a signal? Is there a way to bypass the ignition box? (3x4" black square mounted on the port riser). And finally the coil?

Motor is stock with a q-jet on top. New Parts: Plugs, Wires, Cap, rotor, and good fuel. Should I just throw it all out and do a 6AL Msd box? I also have a blaster II coil brand new I can throw on.
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Old 06-19-2012, 11:28 PM
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Jeremiah,

Look this over

http://forums.iboats.com/showthread.php?t=224551

Hope it gets you headed in the right direction.

John
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Old 06-20-2012, 08:01 AM
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http://www.marinemechanic.com/site/page251.html
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Old 06-20-2012, 08:06 AM
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if yu follow the flow sheet listed on post 3,it is easy to find the problem.
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Old 06-20-2012, 12:00 PM
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Alright guys, ordered a new coil last night and will hopefully get to thesr tests tonight. I have a sneaking suspicion that my problem in the sensor in the distributor. Where can I get one?
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