Steve,

Agreed. My thoughs behind my first point were of the possibility of a high tension breakdown (ie. insulation failure) within the coil due to excessive HT (resulting from high resistance plugs, wires, etc). I should have taken his thread subject literally when he said "cooking" coils. After realising that they were failing through over-temperature, I agree that my first point cannot be the cause. Obviously excessive dwell or primary current resulting from the incorrect ignition module was the cause. Pleased to hear he found the problem.

Greg

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