hi if any one can help me ive got a sedoo gtx di 2001 was only rebuilt last year only done 6 hours since rebuild was running fine last year come to start after winter cranks but does not start only starts with spray when the engine is warm starts on its own but when I tested it on water would only slowly build up speed an stay around 4500rpm didn't bogdown or nothing cylinder 2 spark plug looks like its not burning no maitance lights on an can hear pump prime any ideas please not been pressure tested don't have the kit a