I have a 1979 evinrude 35hp that I am having some fuel problems with. The motor ran fine all last year and in the late fall suddenly wouldn't start for me. It seemed like it wasn't getting gas so I put it up for the winter and waited till spring. I just pulled it out and rebuild the carb thinking that would fix it, still the same story. The bowl on the carb has gas in it, but it wont even pop off. As soon as I spray ether past the choke plate it fires right up for a second and dies. Any suggestions?