I finally cycled around to checking out my 5.5 and 7.5 OMC motors. I keep one dedicated two line tank for them. Last fall I drained the fuel from the tank. This week I mixed up some new fuel, filter it into the tank, hooked up my 1956 7.5. The carb bowl filled but the motor wouldn’t start. Then I noticed fuel squirting out around the push button for pumping air into the tank. The more I pumped the more it squirted. I took the whole tank apart and replaced the cork, the rubber membrane and cleaned everything including the inside of the tank. I also rebuilt the fuel connection and made up a new fuel line. (Why not?) ?Put it all back together and exactly the same thing happened. I hooked my 1:24 tank. The motor started on the second pull. I ran it a while then quickly switched to my 1:16 tank. The motor ran kind of rough but fuel squirted out around the button pump again.
Can anyone suggest what I did wrong? This is the newer style set up with plastic button and I can’t find a decent picture for it. The one in the parts manual isn’t very good. I made sure to check that the connectors were air to air and fuel to fuel. Air is going in and fuel is reaching the motor.
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