Let us use a bit of logic here. What is on the other side of the spark plug? The combustion chamber. There is usually NO OIL in the combustion chamber unless you have a completely worn out set of rings. So, if there is no oil on the other end of those threads, how could it possibly be leaking past them?
Putting any type of thread sealer on spark plug threads is simply not useful. The seal is made by either a tapered seat or a gasket. NOT the threads.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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