I have no water coming out my pee hole. I pulled one of the tubes away from the upper unit and it had a pretty large piece of plastic in it. I removed it but still no water....so, you think the piece was from the impeller? Gonna try to replace it but wanted to see what everyone thought before I bought the part. I ran it at the lake, and still no water, so wasn't a "muff" problem I guess. Any tips appreciated! Thanks everyone!