I am having a hard time trying to start my engine. It has been having a hard start ever since I bought it used. I just tried starting it today and it would sputter a lot but not actually start running. Luckily I have a quick pit starter so my arm wouldn't fall off. The glow plug starter was fully charged and I tried messing with the rich and leanness valve but it just didn't do anything after that. I don't know whats wrong with it but it's starting to get annoying how I can't get this started when it's started before and run great. It is a DuraTrax Nitro Demon car with a Torq .21.