Can a non vented gas tank affect on carb fuel level making some bad air/fuel mixture rate ?

everytime I fill the tank, LOT of pressure is released.

Dunno if the fuel cap I have is vented or not, or maybe got damaged.

My gas tank does have apparently a venting valve linked with a 1/4" hose to a tee on top of gas tank hump ( 74 ) the valve is built in on a fuel line section bolted to the body, and does look similar to a PCV valve inside the 1/4" fuel line.

My car does not have canister or any return line ( yet ), just the line to the gas pump AND the stuff described above like a valve.

Note: when I was installing the new fuel sender unit when I hammered the lock ring to lock, fuel began to release from the line. Hose wasn't fit yet and cap was installed.

Due the high preassures, oftenly, specially on a full thottle and irregular surface street, a whistle is able to be heard