Yeah it sounds like the glow plug, but hey it may be just too cold outside, here last night it was like 28 degrees out and I was itching to play w/ the nitro car, and it was a pain trying to start it. It would do the same thing, I fixed it by putting a fresh battery into my glow starter, and when it lit, it stayed it. Also try you motor may be just too rich, I found out last night if its too rich, the nitro will put the glow plug out or something if too much fuel is getting in there, and if I kept the starter on the glow plug it would stay running. So i leaned it out a bit, and fired away, it fired up and I made my final adjustments and was away, untill i ran into a pole and broke an a arm.[:'(]