its not running hot, and i checked and made sure that when the brake is applied that the idle is still open, and it is. And yes there is blue smoke when it is accelerating to a high speed. But is there a possibility that it is the glow igniter not getting the glow plug hot enough? I charged the igniter overnight and today it ran for 10 minutes and then it shut off, so it did run longer today but it still is shutting off.