Can a pressurized tank lead to a fuel delivery issue?

[Pighead]

So my question now is does this cap vent?

Looks like the same cap I have. I'm guessing that it vents, I hear it whistling on hot days or after a drive

 

[PabloCruise]

When I woke up this morning, I had no idea I’d later be listening to ‘I Think I’m Turning Japanese’. I really did not think so.

That is all part of the value I add here!