Faulty Check Valve Sometimes Cheats You, Sometimes Gas Stations

Faulty Check Valve Sometimes Cheats You, Sometimes Gas Stations

Meet the faulty check valve, a little gremlin that lives inside the gas pump. It could be pilfering your pennies. Or it could be pilfering the gas station’s. It really doesn’t care. According to an AP article, a faulty check valve inside a gas pump is difficult to diagnose and often goes ignored. The pricing errors it produces could either be in favor of the gas station or the consumer. How does this work?