I just replaced the water pump on the first of my twin '88, 150 hp, 2 stroke Yamahas. After install, I started up the motor on muffs and no tell tale pee stream. I let it run about 30-40 sec then shut it down. Tried again, same result. I checked the pee nozzle for crud and it was clean. I've use the same muffs before and always had a stream, although weak. Anything I should try/check before I remove LU to make sure I did it right? I was going to try running it in a barrel vs. muffs next.<br /><br />The lower came off easily and everything went smoothly. The old impeller was in good shape and in one piece, and the new parts went in with no problem.<br />Rodbolt, thanks for the hints, especially for getting the old key out of the shaft. <br />The lower unit went back is easily, just needed a little wiggle to line up the splines. Is it possible that the water tube didn't mate properly?<br />This is a counter rotating motor. When putting the cover over the impeller, I rotated the shaft clockwise per the manual, I assumed it applied to CR as well. (the diff with CR is the gears, not the shaft rotation, right (?))<br /><br />Also, Rodbolt, per you suggestion, I removed the rubber dam and cleaned it out good and reinstalled it (it was pretty cruddy). Even when all cleaned up, the metal base plate still overlaps the rubber by 1/8" or so. It tightened down fine though, didn't see any gap beneath the plate.<br /><br />Any suggestions? THANKS
