im working on a new to me outboard. I checked the impeller and it was fine. The tube from the block out the pee hole was plugged, so i unplugged that. Reassembled the motor and ran in a barrel of water, no water peeing out. I cad blow through the pee hose through the block fine, and from the water pump tube up. bu if i plug one i can still blow are out somewhere below the block above the lower unit. Any ideas, is this normal???