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how long to cool off before doing sparkplugs in aluminum cylinder heads

I've always done the first turn with the socket when the engine was still warm, just to get them loose, then waited till I could touch the heads before removing. Always installed cold. Best opportunity to cross thread is turning new plugs into a hot and therefore malleable aluminum head.






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New how long to cool off before doing sparkplugs in aluminum cylinder heads
posted by  oldduke  on Wed Jul 22 19:05 CST 2015 >


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