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#30140
r-c
Participant

    Lifetime Member

    Appears that there a crack on the inside of the boot. You could try to cut it back some. It may not repair the problem. Replace the boot. It may be just too cracked to function correctly. 2016 – 1975 is 41 years. Rubber gets old.
    Remember that voltage goes to the path of least resistance. Maybe also consider cutting the spark plug cap down some so it goes to the electors and not else where.