Re: 1975 Johnson 50hp...losing power as soon as it hits water...
Which one was the cylinder that didn't make any difference when you unplugged it. By stating that the bottom wet one had spark am I to understand that the upper dry one had no spark? If I assume as you stated in your first post that you have spark in both cylinders, and when you remove the plugs one of them is dry that would point to a carb problem on that cylinder. <br /><br />How did you or whoever clean the carbs exactly? Most likely you need to remove the carbs (do all at the same time) completely disassemble them, soak them overnight in carb cleaner, replace the float valves, blow the jets out with compressed air, and reassemble with new gaskets.<br /><br />Also, I wouldn't run it anymore until I get it fixed because the dry cylinder may not be getting oil if its not getting fuel.<br /><br />It is also possible that the wet cylinder is the bad one because it is flooding out (stuck open float valve), which is why I ask which one is not working.
