Raw water cooling from hose

SeaShift

I'm not getting any water through the drive to the water pump on the hose.  Could it be obstructed.   I took the hose off the pump coming from the transom assembly ran water backwards and it comes out of the drive easily.   The engine will not pump water on the hose what so ever, which is obvious because I can't get water from the drive up to the pump.   Any ideas.  

2003 312 Fiesta.  5.0. Bravo 3

Dream_Inn

Nope, the B3 pump is on the engine.

when you say you can't get water to the pump, with boat in water, does water come thru to the pump?  You my just need to replace the impeller on the pump.

SeaShift

I've replaced the impeller.  The entire brass pump was new last year.   Just replaced the inpeller today

when I say I cant get water to the pump.    With the intake hose off the pump.  I hook up the garden hose and turn it on with plenty if pressure and can't get water to come out of the hose from the transom assembly

MarkB

Are you filling the hide inside the bilge and trying to get it to come out outside the boat? 

LaRea

So you can push water from the pump to the outdrive, but you can't push water from the outdrive to the pump?  Check the cooling water hose inside the B3 that goes to the transom fitting.  In some cases, a loose object inside that hose that can act like a 1-way check valve.  

My mechanic told me about a customer who had a small snail inside the hose.  After it crawled inside the hose, it grew large enough to obstruct the hose.  Everybody was baffled until he removed the outdrive, took off the hose, and found the little critter.