The suppressors are available for purchase separately and just screw off.   I was given a tip on the forums to use a Stanley knife to cut away the insulation and squirt some WD40 on the thread to make sure the end of the wire is not damaged.    Once I started to cut the insulation, it became obvious that the damage was more than just skin deep, the plastic insulation was also badly cracked.

This was obviously how the spark was getting out.      While #6 was the worst, the others look fairly old and may be worth changing.

The car now runs much better.  The stumble seems to be gone and there is more power.   Not surprising since it wasn’t really running on all 6.  I will still check the cap and rotor as the idle is not perfect, and I do not know how old they are.

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