what eats up coils?

[dsg gts]

yesterday i replaced another coil.that's 3 now. I put over 100 miles on it yesterday. i replaced the coil yesterday morning. it ran great. no check engine lights it flew all was good.this morning i took my son to school,less than a mile away. coming back it did the shutting down thing,missfire and it runs like crap again. when i got back here i pulled off the distributor cap.the rotor end was black. as if it burned. is it possible that the distributor is eating coils somehow? i didn't think that they could do that.doesn't the spark go through it? I didn't think that they would produce it.I have ford racing 9mm wires on it. the cap is msd.the coil was changed yesterday with a known good one.she has been eating coils since last fall. it was put away all winter so it was no big deal. now it is getting to be a problem. any thoughts?I'll change the cap today see if it is the msd cap.i have a few ford caps here.

 

[kennebellgt]

Yes, a bad dizzy could indeed kill coils, I would def. replace your cap and rotor if it's like how you decribe, also check your tfi module is rare cases that could also kill coils but that is usually not the case, check your EEC harness and engine grounds, I would bet more towards your dizzy, If not that than heat would almost have to be the culprit, or some kind of short somewhere, or loose connection somewhere, w ould say dizzy though, What kind of coil do you have? Stock ones are usually the ones to get those last the longest, the other brands seem to always go out quickly.


Edit: Spelling :angry7: