Hey all I hope that someone can help me out. I recently purchased a 1995 SEA DOO XP 720 and for some reason it will turn on when a hose is running water thru it but not when I put it into the lake. When I try to get it going in the water it will shut off as soon as i let go of the throttle. It has a brand new battery and new spark plugs! any help with my situation will be greatly appreciated... Also the jet ski is running a mix so the oil is not set up its only running on the fuel tank pre-mix..