I have a closed cooling system on a 1984, 260 Mercruiser. Owned the boat for 20+ years and have a minimal heating up issue. I figured I'd start at the heat exchanger as I have not removed the end caps for many years and don't recall the inside diameter of the of the cooling tubes inside. Does...
The motor is a 1984 fresh water cooled 5.7 mercrusier. Motor runs fine for a half hour for hours on end then out of no where, it's starving for gas or has no gas shooting into carb if you operate throttle manually at carb....I have replaced; fuel pump (mechanical style), fuel filters, rubber...
