Reply To: Black Carbon on Ignition Coil

[CHUCK]

For a while….and it was a few years back….there was a batch of aftermarket coils that had bad laminates.  The laminates were off-spec just enough to cause them to be very difficult or impossible to set the air gap correctly.

A fair amount of grinding/sanding/cussing could remedy the issue sometimes.

I bought some Sierra branded coils during that period that had that issue.

What brand are your coils?  If they were sourced on Amazon or e-bay….I would consider getting OEM branded  (OMC/BRP) coils.