dang got problems, well pour a little gas right into the carb and try to start it, if it doesn't start, put your finger ove the exhaust to create pressure in the cylinder, from there if it dont sound like its goin to turn over, either your glow plug is crapped out, or u need 25% nitro, because i know for a fact that hpi rs4 evo 3 runs better and cleaner with 25% nitro than 20, because i own one. if you want to try something else, turn the flywheel so its at bdc "bottom dead center" you do this by turning the flywheel till it gets very stiff keep turning and you will hear a sucking sound inside the engine when you hear this the piston should be at the bottom.