Google is not much help here, so I am asking on this forum. Where the heck is the gas tank vent, and how does it work? Flip the fuel cap, I see one hole almost in the middle of the cap right below the locking mechanism, and another hole next right to the tank open near the hinge. I also see a pipe inside the fuel tank, and it looks like it is connected to the hole near the hinge. I hear the tank making sound, so that is when the gas comes out. Also, as the gas level goes down, the air needs to go in the tank, right? How is it done?