I'm trying to put together my old 89 650SX jet ski that has been out of service for 8 years. I've got it all repaired and put back together (It took a few tries since I took it apart in '01!). It now starts but as soon as it does the engine races and runs away. The kill switch would not even stop it. Luckily I had a rag ready that I stuffed in the carb to kill the air flow. I have not touched the intake or carb during the repair and everything is tight. I had the exhaust apart and the electricals that burnt up last time. I'm thinking it is an air leak somewhere but don't see anything obvious. Anyone have any ideas where to start? I'm trying to get it going for our holiday weekend lake trip. Thanks!!