I have a 1979 evinrude 115hp. Last night i changed the water pump, and this morning it was pumping water very nicely on the hose. So i hooked up the boat and headed for the lake. We launched and made it 100 yards (not even out of the no wake zone) and the over heating alarm goes off. I look behind me and there is NO WATER being pumped at all. I hooked up the electric motor and went back to the dock. Got the boat home and put it back on the hose. It still is not pumping any water.
Does anyone has any idea's as to what has gone wrong. Below is a video i took this morning before the lake of the motor running and pumping water.
(click on the picture to watch the video.)