I have a 2009 rhino 450. Playing in the mud and water this weekend it shut off on me and when I got pulled out it fired right back up but as soon as I hit the gas it shut off. It idles fine but will not let me do anything else. I have snorkeled it and have a set of 28 inch Super Swamper truck tire on 14inch Moto sport alloy Nukes. The water was up to the top of the bed almost and I sat there for about fifteen minutes before anyone pulled me out. I have taken out the little fan for the exhaust but it still wants to bog down in water and will shut off but as soon as I get out it fires right back up. The fuel pump is pumping fuel fine it seems all the way to the carb. I'm at a loss anyhelp would be greatly appreciated, Thanks