grey spark plugs

[richard s]

have just checked my plugs and they have a light grey coating on them can anyone say what could be causing this cheers

[rowlers]

Think thats good isn't it?

http://www.verrill.com/moto/sellingguide/sparkplugs/plugcolorchart.htm

better than mine, covered in black carbon and crap

[DarnPB]

Grey is good. Shows the engine tuning is correct. Shiny grey, not so good. Could be getting a little hot. Carbon black not so good. Burning too rich. Nothing a good tune will not sort out. Wet black, BAD. Either burning extremely rich or burning oil or a mixture of both.

[richard s]

matt grey not shiny so if this is good im happy cheers