i would like to know were the thermostat is placed on my 1965 33hp evinrude. i have replaced the waterpump impeller and the cooling woorked just fine then i didnt run the engine for i cuple of days and now it wont cool?? and no water is coming out the upper hole (pee hole?). so i thought maybee the thermostat is the reason for this problem or??<br />/Kim