I've recently noticed my 2002 Rev 3 takes more than the usual one or two kicks to get it started. I haven't changed anything on my bike recently except the spark plug.
When I checked the plug it was heavily black with carbon deposit. When I felt it, it was viscous like oil. I have changed the spark plug and its now starting fine. It was an Iridium plug rather than the usual Copper core. I am now back on the Copper cores
I am now wondering what has caused this though as I had only done 3 hours riding to get that amount of black on the plug, am I mixing the pre-mix too heavy, using the wrong spark plug grade or is there a bigger problem lurking around the corner?
Any advice would be appreciated.