you know how a gas pump will automatically ckick and turn itself off when the tank gets full. well imagine pulling up to the gas station with an empty tank and the pump will not stay on. that's my issue. i can't lock the pump handle cause something is causing it to cut off even though the tank isn't even close to full. i've been told that it is a faulty fuel vapor filter or valve??? if you have had this issue or can help me to save some money by telling em how to fix it myself i would really appreciate it.