Has that plug got oiled threads ?
The motor I have now and itīs predesessor oiled the plug threads real bad.
Having nearly choked myself running two valve cover filters sans PCV,
I went for a run today with replaced PCV, still miss firing, BUT NOT number 7,
seems like another has taken over the task
Iīve ordered valve stem seals, so next weekend itīs that and manifold resealing.
