Re: Gasket under power head leaking water
That valve is the water control valve, do you have a water pressure guage? There is a elbow on the port side by #2 cylinder below powerpack and it has a small 1/4 line atached to it. Remove line and with engine running water should exit elbow at a good pressure, if not block is not filling with water. Do the water update to it, order 2 t-stats,covers,springs gaskets for a 1986 70hp, throw all your existing stuff away,plug adapter plate hose, do away with water valve and run indicator to pee hose. Both sides will now run within 20 degrees of each other and will idle & cool better.