The 318 (2 barrel) in my Dart has started and run fine all summer. Suddenly now I have a problem with it. When I go to start it, if I don't keep it running the first time it starts, it will not start again unless I put some gas in the carb. Then it will start and run. But if I stall it, it will not start again unless I dump some gas in the carb again. I'm sure it has something to do with the carb and not the fuel line or pump as there is fuel coming through the fuel line to the carb. I am not a carb officianado though so I don't know what to look for. Your thoughts please.