Here's the run down got a 041/2 sportsman 500 about a month ago went hunting and had a lot of idle time it started steaming and a rewind didn't turn it off. Then the over flow hose blew out. I got it home and checked out the hoses and cleaned the radiator. pulled the thermostat out thinking it was sticking. Toll it out this weekend with no thermostatin and rode for about 5 min and it started running hot. Water looks like it is circulating so I assume the water pump is good. No water in the oil either. Any suggestions?