Re: Sparkplug Install

Posted by TxGoat On 2024/4/23 17:32:46

The area of the head around the threads where the plug gaskets seat needs to be clean metal. You don't want to completely crush the gaskets, but the plugs do need to be tightened firmly. Having the seating area clean will assure proper heat transfer from the plug to the head and should eliminate any leaks.
Over-tightening the plugs is to be avoided. The tiny plugs (10 MM?)used on the pre-war cars need hand tightening with a short wrench only.