i have a .15 cv-rx with pull start and bump start. the motor will fire up and run for anywher from 10 seconds to one minute and then die. it has plenty of fuel flow,the glow plug is new and appears to heat up fine. when running, it doesn't have enough time to get hot. the rotary carb settings are at factory settings. ***the motor was being used on a t-maxx before I acquired it, it ran fine.