On Tue, 8 Dec 2009 09:28:30 -0800 (PST), ransley
wrote:

Where was the plug broken, what part of it, did it melt, what is the
plugs color, did you try a new one just to see what happens or try a
compression test. So post a photo of it, you can tell alot about a
cars overall running condition and age by looking at a plug. A 15 $
compression tester and a new plug will tell you alot.

Nice little chart he

http://www.verrill.com/moto/sellingg...colorchart.htm