Probably a little of both? What I do know is when my car isnt hot I can press on the throttle linkage atrached to the carb and gas squirts through the annular boosters into the carburetor. When the car is warmed and I start driving it after a couple of stops it starts to act as it isn't getting fuel. Once it dies and I pop the hood, press on the throttle linkage fuel no longer squirts into the carburetor from the boosters.
Hopefully I used the correct terms. Heres some pics if I explained it wrong
Edit- pictures are not meant to be offensive, just to help explain in pictures what I may have explained incorrectly in words.
View attachment 1715569947
View attachment 1715569948