I have been chasing a problem with my raw water cooling system since May. I have a universal m25 engine. My raw water pump is not strong enough to pull water from a bucket and through the engine. I thought it was a simple issue with gravity so we used a funnel and a hose held shoulder high to winterize the engine. Unfortunately, that did not solve our problem when the boat went back into the water this spring...still no water out the exhaust. We checked all lines and cleaned out the heat exchanger twice. Replaced the impeller despite the old impeller looking fine. We had water coming out the back of the exhaust and were happy sailors. Our happiness was short lived as we returned to the boat about a week later and again no flow from the exhaust. After following instructions regarding dealing with airlocks we again had water coming from the exhaust. We were happy sailors again for 3 weeks. Unfortunately, we again have no water at all coming from the exhaust. I am all out of ideas of what could be causing the problem. In removing and examining every hose the smallest outlet of what I believe is the injection elbow broke off. I have been able to find where to replace this part. I have included a picture of the part (intact) and was hoping someone could help in locating the replacement part. I also welcome any suggestions on what may be going on with our otherwise strong engine. Thanks!
