It doesn't take much for plugs to "cold weld" into place. One excellent
trick for preventing seizing spark plugs --> anti seize compound! After
stripping out the threads of my Mazda (aluminum head), I never change plugs
without the stuff. Up here, just a trip to the local Canadian Tire and a
bottle is pretty cheap -- considering how much a head rebuild (or a Heli
Coil) costs.
BTW, I was warned off changing plugs with a hot engine while I owned a
Beetle -- it can lead to cracking the head.
Michael Thomas
1975 Spitfire
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