In Reply to: Re: What to do with 8N? posted by Bruce(OR) on February 19, 2017 at 13:20:14:
Duh. . . .That's whut I forgot. You can either go with a hotter range spark plug if it is fouling out or a spark plug non-fouler. That non-fouler is basically a spark plug extension that screws onto the bottom of the plug before you screw it into the engine. It encapsulates the electrode and slows down, if not eliminating, the oil fouling tendencies of a bad cylinder. There is also the train of thought that says as your raising the base of the spark plug from the head and this also acts to raise the plug operating base temperature range.