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Coil burning out

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Old 07-10-2017, 05:09 AM
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Triple check you have no bare 12v leads for the ignition. Should be purple wires IIRC in the merc harness. I pinched one once and was chewing thru coils till I found the short.
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Old 07-10-2017, 06:18 AM
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Quote:
Originally Posted by endeavor1 View Post
Triple check you have no bare 12v leads for the ignition. Should be purple wires IIRC in the merc harness. I pinched one once and was chewing thru coils till I found the short.
great point,,my friend had that same problem.2 gm new style coils burned up.that was a head scratcher.
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Old 07-10-2017, 08:04 AM
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I will definitely be checking the harness for a short it sure sounds like a short to me. Thank you for your help. I will let you know what I find
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Old 07-10-2017, 09:00 AM
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Merc harnesses have more than one switched 12v wire. Spend some time with a ohm meter and test light. I bet you can find your problem.
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Old 07-12-2017, 10:37 AM
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I found a plug wire that was pinched in the steering back side of the motor. Could that cause a direct short or just a misfire? It had worn through the insulation on the wire!
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Old 07-12-2017, 10:43 AM
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the coil is trying to fire that plug through the cap and possibly being sent to ground so I can see this being an issue, and yes misfire fo sho
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Last edited by F-2 Speedy; 07-12-2017 at 01:47 PM.
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Old 07-12-2017, 12:07 PM
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Thank you I've got new distributor coil wires and plugs just scared to death to turn the key and burn something up again! I'll mix up a stiff drink and turn the key!
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Old 07-12-2017, 01:48 PM
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make sure you get the firing order correct, you dont need to chasing another problem
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Old 07-13-2017, 06:36 AM
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One at a time
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Old 07-17-2017, 08:57 PM
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Thank you everyone for the help! The ignition switch was bad. We are back and running ! Thanks again
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