Reply To: Johnson A series cooling

[Tubs]

I wouldn’t assume that because air and water is passing through the cylinder you don’t have some blockage. Taking
off the waterlines, blocking the bottom fittings, filling both cylinders with water, and then comparing the amount of water each cylinder held might be a better indicator.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.