Home › Forum › Ask A Member › Water pump theory question › Re: Water pump theory question
Well, there is some bleed off the pressure side of the pump before the water gets up to the powerhead, probably a bleed hole in the water tube as well, which explains the water coming out of the exhaust. I know you say you felt hot air coming from the overboard indicator, but are you sure that passage is clear. It is very common for the elbow to get plugged, and for stuff to get jammed in the plastic outlet that snaps into the motor pan. Have you removed the outlet nipple? I would remove it and blow back through the hose with compressed air.
The location of the cooling inlets is all the way near the leading edge of the gearcase, not the best design. It is very tough to get ear muffs to seal around them very effectively. You might want to put the boat in the water, or sink the engine deep into a test tank/barrel before going too far here. In other words, you may not really have a problem at all, hopefully anyway…