I assume you attached the hose to the fuel tank side of the pump. As you said it sucked up fuel. If that was the case you should have been able to start the car with fuel being pumped up from the can unless the fuel line from the pump to the carb is blocked.
This will tell you which part of the line is blocked.
You could also connect the can directly to the carb inlet and see if the car starts-gravity fed.
Worth opening the fuel tank and checking the “filter” on the fuel pipe.
Process of elimination…..good luck.
Alistair