Other question- The front tank gives me a lot of trouble when trying to pump fuel into it. The gas pump nozzle just keeps shutting off. Sure was a pain to get gas into the tank.
Response:
To answer your 1st question, there is a metering valve that changes which tank is drawing fuel and where the fuel is being returned. It is possible for that valve not to function properly thus allowing the fuel to be returned to the other tank. However, if it is fuel injected it will cause preformance problems and possible check engine light.
To answer your 2nd question, there is a restriction in your fill tube or the vent/return on the fill tube is restricted.
For the 1999–present F-250 and higher models..
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