I have a 2000 700 RMK was hill climbing and flipped it on its back. Took about 10 minutes to dig out and put it upright. Rode it back down. Went about a 1/4 mile and the temp light came on looked under hood and looked like steam coming out of a spark plug. Put it on trailer and brought it back. Starts, but has coolant in tub. Any suggestions as to problem, wondering about a head gasket? Thanks