Arcing coil

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Discussion

geeman237

Original Poster:

1,235 posts

186 months

Saturday 28th November 2015
quotequote all
Today my Daimler SP250 came to an embarrassing halt halfway up a large bridge. It turned over, and struggle to fire but that was all. I had it towed home where I got it idling but it would die when revved. I noticed out the corner of my eye that the coil plug lead was arcing to the coil positive terminal. I removed the coil (Pertronix/Ignitor Flamethrower) and found a hairline crank where the rubber insulation boot slips on. That was where it was arcing. The coil is about 6 years old. I wrapped the end of the coil with insulation tape and the car ran properly. I've ordered a new coil, but wondered if anyone might know what caused the crack in the first place?