To be precise, you'll need to look along the top of the fuel rail itself. It will be a small, usually brass-colored valve with a cap similar to a tire valve stem. It's often near the middle or end of the fuel rail, but its exact position can vary slightly depending on the engine.
Important Safety Precautions:
* Disconnect the negative battery terminal before attempting to locate or access the valve. This prevents accidental sparking and potential fire hazards.
* Wear safety glasses. Fuel under pressure can be hazardous.
* Be aware of fuel vapors. They are flammable. Work in a well-ventilated area.
Because the exact location can vary slightly, it is best to consult a repair manual specific to your 2001 Explorer Sport Trac's engine (likely a 4.0L or a 4.6L V8). A diagram in the manual will clearly show the location. You can usually find these manuals online or at auto parts stores.
