holley 1945 losing its prime

dirty white boy said
if i let my truck set more than couple weeks in summer, couple days in winter i have to fill my bowl with gas before she'll fire off!! ant no problem when its warm weather, lot worse when cold weather! try and spin engine in hopes fuel pump will fill carb but itll run battery down before that might happen! i dont get out every day or 2 but priming carb every time i go out last month or so is getting old! any ideas any body?

This is the main reason I went to an electric pump.
Engine fires off immediately now.

I blocked off crossovers, used insulator spacers, and even a full recirculating fuel system, but nothing solved the evaporation issue.
The electric pump did because of it’s ability to fill the bowls before cranking the engine.

Lift&Move said
Just had the same issue on my 71 Swinger, 1920 Carb....
It was the accelerator pump diaphragm, I put a kit in it, and problem went away!
Thanks

An accelerator pump can only solve that problem if there is sufficient fuel to pump.
That’s great that it solved your issue though.