hello

i am gradually trying to revive my 1965 283/4-speed with manual choke, the truck was sitting for 2 years. i am in the process of replacing the tank so just to get in and out of the garage i have the end of the fuel line submerged in a 2 gallon gas container
(it has worked this way prior with no issues)

the choke cable needs to be replaced so for now i am manually closing the choke, the motor cranks just fine but there is no gas reaching the carb. i disconnected the fuel line from the carb and when i crank the motor i see no fuel coming out of the line??

i am still trying to learn and grasp the basics so please forgive the elementary questions.
any help will be appreciated

thank you