spark plug colour
Posted: Sun Jun 10, 2012 6:30 pm
Hi EVrybody!!!!
this is one of my spark plugs, it has a brownish tip but where threads start they are sooty, is this normal? or is it a bit rich? should the threads be brownyish as well?[frame]
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this is one of my spark plugs, it has a brownish tip but where threads start they are sooty, is this normal? or is it a bit rich? should the threads be brownyish as well?[frame]