On Tue, 8 Dec 2009 14:42:26 -0500, "JoeSpareBedroom"
wrote:

OK - so now that we've established that there's a broken spark plug
(assuming the mechanic's telling the truth), what are the various levels of
horror which could result from further diagnosis?

Valve wrecked?

Valve seat(s) wrecked?

Piston damaged? Top? Sides? Don't ask, it's too scary?


All that, plus scarred cylinder wall , malted rings, yawn.

Start with a compression test. Even check all the cylinders for good
compression.