A gas pump repeatedly shutting off sparked a heated debate over EVAP systems, faulty pumps, and why some cars suddenly become difficult to refuel.

A Costco customer filling up her tank was left with a pool of gas beneath her vehicle because the pump wouldn't stop pouring. Why does this happen?

A gas pump repeatedly shutting off sparked a heated debate over EVAP systems, faulty pumps, and why some cars suddenly become difficult to refuel.