I usually don't winterize my bike because I try hard to ride it all winter long, with the longest break being maybe 2 weeks.
But this winter we've been practically underwater with record breaking rain and on top of that I've moved, so I've only been able to take it out twice in the past 2 1/2 months, the last time being 5 weeks ago. It's always in a garage with the tank topped off with E0 92.
Today I had a chance to take it out so I did. It was a beast to get started and it idled like crap for a long time, but I figured it'd sort itself out once I got it thoroughly warmed up.
A few miles later, it starts revving like crazy and the kill switch doesn't stop it, nor the ignition switch, so I slip it back into gear and use the brakes to stall out the engine as I pull it over.
The plug looked normal and a flashlight down the hole revealed a normal looking piston crown.
I manage to nurse it back home to check carb and head bolts and all are right where I left them last several months ago. There is no sign of leakage in the carb/airbox area or the cylinder gaskets.
I check compression and it's really high around 185 so I figure that must be why it's pre igniting, though why it's that high I haven't a clue.
So, I'm going to pull the head and see what I find.
The last many times I had it out it was running perfectly. Why this out of the blue? F***ing PX. This is really tiresome.