My nitro car was working fine until I gave the controller to my little cousin and he crashed it full speed into a rock. Something with the steering snapped, so I ran the car on idle until the tank was empty and left it in the garage for about two weeks. When the new parts finally came I quickly replaced them and tried to start the car. I primed the engine and soon the pull start was stuck. I thought I hydrolocked the engine so I took out the glow plug, tested it, and turned the car over to empty the engine as usual. When the pull start still didn't move, I disconnected the fuel line to see if the hydro locked engine really was the problem. No matter what I did, as long as the glow plug was in the engine, it would not move. If it was not in the engine, the pull start worked fine. What could be the problem?