I’ve got a problem with my 2011 YZ450F. During my second moto on Sunday, the bike just cut out. It didn’t stall like when you going into a corner with too much rear brake, or flame out. It died like it fouled a plug. It then wouldn’t start for at least 20+ kicks or bump start down a hill. After starting, half a lap later, same thing -- died out like it was fouling a plug. After it finally restarted it ran fine for the remainder of that moto, but I only had a couple laps left, so who knows if it will happen again. This was the first time this has happened to this bike. Bike is immaculate -- only 65 hours, fresh gas, valves in spec. Bike started right up this afternoon after a wash.
Using the Yamaha mild map, if that has anything to do with it.
Not sure where to begin with trouble shooting this. I do know that I don't want this to happen over a jump as the landing could be painful.
I really appreciate any help you can give me.