My neighbor's kid has a coleman bt200x & he rode for about a week & all of a sudden it quit running & is hard to get started but when it does start it cuts off as soon as you get on it. He's been leaving the gas on (dont know if that has something to do with it). I took the carb off & cleaned it same thing happened so I thought it might be flooded so I cut the gas off & kept pulling it to try & burn the gas in the motor off but still nothing. What else could it be?