Check Fuel Route First...
Make sure you have adequate ventillation in the cabin first, so you can actually pinpoint the source of the vapors. You will need to trace the route that fuel takes from the intake port, to the fuel inlet line, to the tank, then out of the tank and through the fuel line to the pump (located on port side of engine), then to the carb, and into the engine. Sniff each connection and line along the way, check for moisture. Hard to tell what would cause your problem with the info given, but I'm wondering if you might have a minor leak in the inlet hose that runs from the fuel inlet port to the gas tank. This might account for smelling gas during and shortly after tanking up, but not later. Replacement of this hose is relatively easy. I don't think it would be the carbuerator, as the fuel pump sits between the tank and the carb, and should prevent the carb from overfilling. A-4 mechanical fuel pumps can leak, but as I understand it they tend to pass gasoline into your engine oil (a very bad situation). Luckily, changing out the pump (if that is your problem) is not too expensive. Replacement of all other fuel lines (especially if they are original) is a very good idea, unless you know for sure when they were last replaced. Best of luck, and let us know how you make out. Rob
