I have 2 HD motorcycles, both ran and have not been started for 2 years, neither will start now, the 03 ultra classic gas tank has been emptied, 1/2 gallon of new gas 1 oz of seafoam, it will run with starting fluid sprayed into carb but will not run/ start without spray, the gas tank bubbles after the ignition is turned off...how can I get gas through the injectors...

Should I continue to spray starter fluid into my carb. untill it gets gas through the system, please assist...

I suspect debri in either the fuel line, tank, or carburetor, and would clean the whole system out. Carburetors can be very tricky. No need to keep spraying starter fluid just clean your system especially the carb.