check your glow plug to see if thats lighting up, if it is then id reset you needles to the factory settings so you can at least get that out of the way, if its not firing then spin the flywheel over with your finger and see if the motor has any compression if it dose not then its time for another motor for ya. id upgrade to something non durtrax engine, the trx 3.3 is one of the best bang for the buck you can drop in