Bike starts with or without choke, once running will run fin for about 2 to 3 minutes, then starts to cut off and run rough will only stay on with full choke and runs rough and for about 3 to 5 min then idle starts to go really high and then turn off choke and bike runs back to normal. Will run fine most of the day but occasionally will cut out and sputter with riding i put full choke while coasting for 30 sec to 1 min and starts to run normal again.