I pulled the plug on my bike to check its condition and found a white chalky substance around the base of the plug. The boot was sealed against the engine cover. Is this from water? I don't usually ride in water much but I'm not sure what this is. Anyone else see this on their bikes? BTW, easy way to pull the plug is to take some fuel line, make a 1/8" split in it and slide it over the plug. Easy to take out and reinstall.