Re: Small bubbles at spark plug thread
It's not uncommon...
Try a copper crush washer from another name of plug...
or just a small dab of never-seize on the threads... NGK does NOT advise using never-seize compounds... but they don't own a chinagirl!
the prob could be shabby tolerance on the drill and tap, or just the milling on top of the head where the plug seats... you got a mill???
if it's not real bad it will probably plug itself up! lol
My goal is cheap, reliable, personal transport, below the tax collector radar. Fun counts for a lot!