I have a 90' Bayliner with a force L-drive I/O and for the life of me i cant get the water pump to pump water i have changed the impeller and the impeller housing etc. and it still wont pump now it pumps very little water but not near enough to keep from overheating either with the muffs or in the water. If i remove the hose from the intermediate housing and pu the muffs on and start it not very much water pumps out. Is there something im missing IE: Thermostat etc. The engine is not clogged as i have hooked the hose direct to the engine intake and it cools like crazy. The lower unit doesnt seems to be clogged as i have put the hose in every spot water should come or go into and everything seems to B ok. But its not the thing wont pump water on its own.<br /><br />Any help is greatly appreciated ,, thanks in advance for the help