Bought 18 H.P. ser. # 15020 15104 from friend it had good care but it set for two years. Starts and runs great, but little or no water out hole on back of leg about half way down with ears. motor temp. taken with infared temp. gun gets to about 180 f. and I shut it down. With engine in barrel a little water comes out hole at back and water comes out 1/4 in. hole on side of leg at the same level as hole at the back. motor still gets hot. Checked water pump looked o. k. Grommet at top of water tube not great but should leak little or none. Water level in barrel about 1 in. to 2 in. above water pump. All testing done with motor in neutral. Would that make a difference. Also what year is this. First time here. Thanks