The traditional three port fuel selector valve is designed to allow the operator to switch between two fuel tanks, without having to switch the supply hose from one tank, to the other. Each of the two outboard, (outside) ports, go to your fuel tanks. The middle port is the outlet to your engine.
when you have two tanks on your vehicle the fuel tank selector valve chooses what tank will send fuel to the engine. both tanks run into the valve
The fuel tank selector valve on a 1993 Ford F150 with a 4.9L engine is on the left side frame rail under the driver side floor pan forward of the side fuel tank in-line on the fuel lines. Follow the fuel lines from the side tank forward until you see the selector valve. The valve will have at least three fuel lines and one electric plug with wires plugged into it.
inside the in tank fuel pump.
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Is there a rocker switch just to the right of the headlight switch ?
tank is built with two fuel drains, 1 normal use, second is reerve. when normal doesn't provide fuel, turn fuel selector valve to reserve position for the last 3/4 of a gallon of fuel in the tank. Look for the gas line coming out of the tank and it will go into fuel selector/cut-off valve. Most m/cs work this way.
On a 1996 Ford F-250 XL 4x4 with dual fuel tanks, the fuel tank selector valve is typically located on the frame rail, near the rear of the vehicle. It is positioned between the two fuel tanks and is connected to the fuel lines that supply fuel to the engine. Accessing it usually requires lifting the vehicle for better visibility.
On a 1992 Ford F-350, the fuel tank selector valve is typically located under the vehicle, near the fuel tanks. It is usually mounted on the frame or along the fuel lines that connect the tanks to the fuel pump. To access it, you may need to crawl underneath the truck, as it is not easily visible from the top. Always ensure the vehicle is securely supported before working underneath it.
On a 1996 Ford F-250 Powerstroke, the fuel selector valve is typically located along the frame rail, near the fuel tank. It can be found on the driver's side, between the fuel tanks and the fuel lines. Accessing it may require removing some undercarriage components for better visibility. Always consult the vehicle's service manual for specific instructions and safety precautions.
It is bolted with 2 10mm bolts to the chasis underneathe the drivers side. The only tank selector is in the switch on the dash. It transfer power to each tank to activate the electric fuel pumps for each tank
On a 1988 Ford F-150, the fuel tank selector valve is typically located underneath the truck, mounted on the frame, near the fuel tanks. It is positioned between the two fuel tanks and the fuel lines that lead to the engine. You'll need to look under the vehicle, just in front of the rear axle, to find it. Be sure to take proper safety precautions when working around fuel systems.
Underneath Driver side Cab as it meets the bed and it looks like this