Champion plug pulled from a customers jeep. Looks like a piece of copper wire where the porcelain meets the metal hex. Is that the seal that keeps the combustion from going out the plug?
Originally Posted by ARCOgraphite
I think, so but no sign of residue from that place up the outer porcelain.
I don't like that i see melted material on the working end though!
What up with that? Too Much Nitrous
I never liked the over extended tip plugs used on fords and mazda as an ignition, emissions "crutch"
What engine?
89 wrangler with a carb'd 258. The base of the carb was warped as well as having various vacuum hoses off,broken etc. Huge vacuum leaks. Just got the carb back from the machine shop. They used the finger remover( long story lol) to flatten the warped carb base.
Trying to get it to pass the California emissions test.