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Old 02-19-2014, 10:37 PM
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rustycase rustycase is offline
Gutter Rider
Join Date: May 2011
Location: Left coast
Posts: 2,745
Default 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
Good luck
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