I have a 1982 Bayliner Volvo penta Engine Size AQ 125-170 it is overheating, air bubbles, changed water pump gasget new inpeller pump, anybody know anything about this boat thank you
Hi shiflett,<br /><br />Air bubbles entering the raw water system is usually a sign that the outdrive pickup tube and/or hose is leaking. Is it fresh or raw water cooled? Is it a 270 (170?) outdrive?<br /><br />Aldo
Hey Dunaruna,<br />This is my brothers boat and it has a closed cooling sytem. I believe it has a 270 outdrive. He wants to pull the head and replace the gasket which could very possibly be the problem. I told him to post here and get suggestions on easier things to try first. It is only overheating above 2200 rpms.<br />Thanks
Sorry, I thought you were referring to a raw system. So the air bubbles are in the heat-exchanger, that is a sign of head gasket failure. <br /><br />Aldo
it sounds like you are getting air into the heat exchanger <br /><br />you can test it with and auto type raditor pressure tester and look for water entering any of the cyl through the spark plug holes <br /><br />it sounds it a head gasket but why take apart the motor with out testing it to sure were the problem is<br /><br />tommays
