SchumacherM wrote:I think a sparkplug is a minor thing on the engine, like changing the oil or something similar. Maintenance I think it's called.
I really can't see why changing sparkplugs could be illegal. It would be really stupid...
(Hi Michael, remember the greasy spoon at Silverstone when Briatore came and nicked you from Jordan?)
A cracked insulator on a spark plug is almost impossible to guard against, just the worst of luck.
Mind you I would be a little worried about something else 'solid' having cracked it. I hope they can confirm that nothing else was involved.