You'd want to pull the fuel line from the carb. What you pulled sounds like the inlet to the fuel pump. A fuel/water separator would be an aftermarket-added item and not mounted to the engine. Either way, a carb-equipped engine won't have fuel delivery from the tank, it'd be by the fuel pump mounted on the engine, operated by the cam. To truly test if the system is delivering fuel to the carb you'd need to detach the fuel line from the the inlet to the carb (the hard line coming from the fuel pump over the top of the engine to the carb) and crank the engine for a revolution or three.
I'd worry a BIT at not starting from starting fluid. It's not a sure thing.