I think we all have heard the rush of air when we pop the cap on the fuel tank. This weekend, mine sucked air for quite a bit longer than usual and the tanked actually popped. That day I was losing power off and on while running and had a difficult time starting it when the power loss occurred. The motor did not shut off just got bogged down like it was starving for fuel, then would take off. I have it narrowed down to bad gas, or the tank got "air locked".
How do these tanks vent, or don't they need to?