Hello, I have a 1986 Bayliner with an AQ125B/270 outdrive. I am having an issue with the boat overheating. When idling and trolling about the I can remove the freshwater strainer cover and water will cascade out of the exchanger. When I get going at higher speeds I lose the cooling water and the boat overheats, (coolant is released from the radiator cap). I can let it cool down and water will flow when idling. I replaced the cross piece and impeller but get the same results. Am I missing something? Any help would be greatly appreciated. Thanks.
James
James