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Old 02-11-2008, 06:38 PM
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Hypothetical HEI Module/Coil Question

OK.....I break down in the middle of nowhere. I have a spare Ignition Module and In-Cap Ignition Coil for my stock GM HEI. I have 12-Volts to the distributor with a test light.

Is there a way to check and know which part has failed without changing both parts?

Thanks for all information~~~~~Ron

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Old 02-11-2008, 07:58 PM
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It is easier to keep a spare distributor and swap it out and repair it later.
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Old 02-11-2008, 09:31 PM
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Quote:
Originally Posted by Sweet-34
OK.....I break down in the middle of nowhere. I have a spare Ignition Module and In-Cap Ignition Coil for my stock GM HEI. I have 12-Volts to the distributor with a test light.

Is there a way to check and know which part has failed without changing both parts?

Thanks for all information~~~~~Ron
We had a kent moore module tester back in old days at the dealership. You can also ohms test the coil. More often than not the problem was the pole piece and you have to remove the distributor to replace it anyway. In my personal car I used to always carry spare point type distributor, resister and jumper wire. It saved me more than once.
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