Relieving Fuel Pressure
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Place suitable drain pan under fuel filter/water separator drain hose. Open drain valve on fuel filter/water separator and allow fuel to drain into container. When filter is drained, close drain valve.