I have disaasmbled my lower unit and have looked at my impeller. The fins are still intact but they are bent in different ways, that is two are straight and a couple of the others are bent into a helical position. I tried turning it and it will not budge. Is it good or not? I'm trying to find the answer to why there is no water coming out of my pilot water hole. I was also wondering if I could test the cooling system by putting water pressure (ie. garden hose) to where the end of the water line connects to the pump? I don't have an adapter for the flush hole to try but that would be below the water pump anyway.