02 raptor rode 3 weeks ago. parked inside. started it today for a ride will not run with choke off. took carbs off and cleaned, put new sparke plug in. checked the valves, check the fuel. also noticed the rev. light flashing. what should i do next to get this thing to run. back fies throught the exhaust like a lean misfire

 

I just bought one that is doing the same thing. Did you figure out the problem?

 

First things first, check the parking brake. A flashing reverse light usually means the bike is idleing too high, over 1500 rpms or so.