Removing CNG Low Pressure Fitting
WARNING: This page is about a different car, the 2002 Ford Econoline and 2002 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Release fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect negative battery cable. Raise and support vehicle. Remove compuvalve shield. Slowly crack open compuvalve low-pressure fittings. Disconnect fittings and remove and discard copper washer seals. Disconnect low-pressure line at fuel pressure regulator. Remove and discard copper washer seal.