7.3 Powerstroke Ford 6 Port Fuel Tank Selector Valve

Important note!
Selector valves are often times misdiagnosed. I like to separate their issues into two categories. One would be the electrical side (which I won’t discuss here) and two would be the fuel side. Often times the umbrella inside either tank breaks down/apart and clogs the pickup tube on the sending unit or the inlet side of the selector valve. In either case, one tank “won’t work right” and people believe the selector valve has failed. This most often can be remedied by installing our pre-pump solutions kit and then using gentle shop air to blow out the sending units and the selector valve on the inlet side. We recommend having one person switch the selector valve back and forth while someone else is blowing shop air at a low pressure through each feed side/inlet side port multiple times. Once the selector valve is clear and the actual problem (inlet restriction) is removed – the selector valve often times goes back to normal everyday operation.

We can not stress this enough – our OBS E-Fuel kits come with a vacuum gauge that will identify these issues for you. Please use it and avoid breakdowns and frustrating parts failures.