8hp yamaha, model 8SG, new water pump kit installed, no blockage, water tube, pee hole and head clean, air flows thru, but it still wont pump water out of pee hole. Water will flow thru when hooked up to flushing dog ears???????<br />I did notice when I block the end of copper water tube out of pump going to head and pump air into pee hole I hear the air escaping some where by the top of tube. Think a porous tube could be cause?