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Joined: Oct 2012
Posts: 61
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Member
Joined: Oct 2012
Posts: 61 |
Does anyone know why my HEI coil keeps dying?
I replaced the old HEI dist with a new unit 6 months ago..i have only driven 2000 miles max and the new coil has died..
Ive tested it and the readings show it has failed.
I know they last more than 6 months so does anybody know what it could be or am i looking at changing to the trusty points system
Its fitted to a 69 with a 400/400
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Joined: Jul 2002
Posts: 856
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Joined: Jul 2002
Posts: 856 |
Are you sure you are getting 12 volts to the distributor.
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Joined: Jul 2002
Posts: 856
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Member
Joined: Jul 2002
Posts: 856 |
Are you sure you are getting 12 volts to the distributor.
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Joined: Aug 2010
Posts: 232
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Member
Joined: Aug 2010
Posts: 232 |
I've never seen an HEI coil itself fail. What makes you think it's bad? Could it be the cap or (as someone above mentioned) you're not providing +12 from a reliable source (12V with the ignition on at the HEI).
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Joined: Aug 2002
Posts: 7,495 Likes: 1
Premium Member
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Premium Member
Joined: Aug 2002
Posts: 7,495 Likes: 1 |
My coil failed this last summer after a 150 mile drive. The center contact in the cap was fried as well. The next day the coil in my buddy's 69 fried on the freeway coming home after only a couple minutes on the road. His cap looked fine but it was following a week of 100deg weather. These were both in-cap coils. I think with the heat generated under the cap these coils have a finite life span. I've gone to carrying an extra coil in the trunk just in case until I can change over to a dist with a separated coil.
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