My question is about spark plug reach. I recently removed my intake, and while looking at one valve that was near max lift, I could see the electrode was at least 1/8 inch in the threaded hole. I ...

So, it's time for new spark plugs. Your hands are covered in grease, you're twisting the ratchet, and –- snap. Half the spark plug stays lodged inside your cylinder head like a nonpaying tenant who ...