I dont know. But he changed the whole piece of distributor cap and the
4 wires (that goes to the spark plugs) and that actually seem to have
solved the problem. I am not sure if that answers your confusion.
Jim's reply might be the answer.
yeah, but there's misfires and there's misfires. weak spark is not a
misfire, but it definitely reduces combustion completeness and therefore
affects both power and emissions. weak spark is most definitely
possible with a worn distributor cap full of spark eroded contact crud
and disintegrating carbon brush debris.
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