I have an 04 Blaster, it will start and run but only for a minute or 2 then it back fires and dies, i dont have any idea whats going on, i took the carb off and everything looks good? I dont understand it, I am getting some oil in the air cleaner box under the seat and a little dripping from where the air cleaner mounts to the back of the carb? Any help would be awesome!!:-/