i have a 1981 johnson 15 horse model J15RCIS i just retired my 1980 everything seems to work with water circulation the pee hole is putting water out strong but nothing out the hole in rear of motor my 1980 has 2 holes on the section between lower unit and power head and water comes out of them when it warms up but as i stated this moter only has on hole and all i feel is warm air comming out and no water maybe this is how it works i have looked at seloc online but it mentions nothing . should there be water comming out the hole or not ?/ please help also how do i know if thermostat is opening or not will water come out this port when it opens ?i purchased the online seloc manual for 36 dollars and cant find anything on that single port guess i wasted the money