Please help before i may make a mistake regarding my water pump

[BayouNola]

PLEASE PLEASE HELP. HELP I just changed the Impella on my 1994 150HPYamaha. Is this normal or not. As soon as the engine started up I did not have any water peeing out Now out of caution I turned it off. I did not let it run more then 5 or 10 seconds. Is this normal or should I let it run a bit longer to see if it will come out. The only thing that should be noted was when I replace the Impella with the new one. I had to use the old housing and the old stainless steel cup instead of the new one. The reason was the new stainless cup would not fit or lock into the old housing. On top the new cup was 2 raised tips and the old had just 1. So it would go back correctly I used the old cup. Do I have anything to worry about or did the Impella go on backwards??? Help

 

[deepsea21]

Did you fire the engine with the boat in the water? You need the water level to be above the cavitation plate for the pump to push water. If you had it on a hose with earmuffs, next time squeeze the earmuffs against the sides of the lower unit and hold them tight until the pressure from the hose has forced water up through the pump and it is spitting out everywhere. Then, stand back and have someone start the engine. It should keep pumping and peeing out the tell-tail pee hole.