i have an exceed rc razor 1/8 buggy, and every time i land a jump hard or hit a big bump, the engine shuts off. also, it is and always has been very hard to start unless you heat it up first. dont know if the two problems are related or not. any help will be greatly appreciated.<br type="_moz" />

since the engine is hard to start unless you heat it.... are you sure the engine is broke in?

and it sounds like the flywheel is hitting the ground after the landings and killing the engine...