Why does my car keep blowing ignition coils on the same cylinder?
Repeatedly blowing and melting ignition coils and plugs on one specific cylinder usually points to a localized fault such as a shorted fuel injector, a wiring harness issue, or a compression problem feeding excessive heat to that spot. This prevents the vehicle from running reliably and causes persistent misfires even after replacing the parts.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1swap it out and see if that fixes the problem
- 2Replacing coils and plugs
- 3Using a threading kit and having a mobile mechanic re-thread the cylinder
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“The brand new coil and plug were melted yet again.”source ↗
“Any clue or ideas for why my 2014 Chevy Silverado would keep blowing ignition coils on the same cylinder, it keeps happening on cylinder number 2 so it’s not a dod cylinder”source ↗
Where this came up
People with this problem also raised
- 5Why do ignition coils keep failing one after another?
- 4Can a vacuum leak cause multiple cylinder misfires and a lean code?
- 4How to get broken ignition coil pieces out of the spark plug tube
- 4Why is my car misfiring and stalling after changing spark plugs?
- 4What to do if you cross threaded a spark plug
- 4Why does my dryer keep blowing new thermal fuses?