Fuel System Pressure Release
WARNING: This page is about a different car, the 2003 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Vehicle must be stopped with engine off when draining fuel filter water bowl. Fuel can ignite if fuel filter is drained while the engine is running or vehicle is moving.
NOTE:
Diesel fuel can damage asphalt and other surfaces. Always place an appropriate container under the fuel filter water drain under the vehicle and dispose of the waste in accordance with all federal, state and local requirements.
WARNING:
Smoking or open flame of any type must not be present when working near fuel or fuel vapor. Fuel in the fuel system remains under high pressure even when the engine is not running. Before repairing or disconnecting any of the fuel lines or fuel system components, the fuel system pressure must be relieved to prevent accidental spraying of fuel, causing personal injury or a fire hazard. See FUEL SYSTEM PRESSURE RELEASE
. Clean all fuel residue from engine compartment. Failure to do so can cause personal injury or damage to the vehicle.
Open hood and place an appropriate container under fuel filter water drain under vehicle. To release fuel system pressure, open fuel filter/water separator drain valve. See Fig 1 . After pressure has been released, close drain valve by resetting handle to its original position. Properly dispose of drained fuel.