How do you replace fuel plug in 2002 expedition?

To replace the fuel plug in a 2002 Ford Expedition, first ensure the vehicle is turned off and cool. Locate the fuel filler neck where the fuel plug is situated, then carefully unscrew the old fuel cap by turning it counterclockwise. Replace it with a new fuel cap by aligning it with the threads and turning it clockwise until it clicks securely into place. Always double-check that the cap is tight to prevent fuel vapor leaks.