Reply To: Johnson RDSL-21 mercury Switches

[Tom Alexander]

Hi: yes there is water coming out that ‘exhaust relief’ port. Enough that it wets my hand to the point of water running off it in seconds. Warm steam(?) too. Right now I am not doing any ‘runs’ longer than about 2-3 minutes and those are not going over a quick excursion into the 2000 rpm realm. Think fast idle more or less. So I think the cooling system is performing normally? That is the reason I said what I did about the water pump working correctly. This could be my wishful thinking of course after the hours spent rebuilding the gear case and associated bits and pieces including the water pump. I will do a much longer run soon when I get my temperature measuring gear in place and let the engine really reach ‘operating’ tempature (150-165?). Right now my time is split between getting this done and getting the engine and prop aligned in a 1953/55 Mercury Ski Tug. It’s an old Gray Marine just back from a rebuilder who shall remain nameless as he did such a sh*;%ty job and charged me moonbeams. That is a Kiwi expression for heaps of money. Life is a balancing act but I would like to be able to get both boats wet this spring. Wish me luck!