Fuel System Pressure Release: 3.0L
WARNING: This page is about a different car, the 2002 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Remove fuel filler cap to release fuel tank pressure. Remove pressure relief valve (Schrader valve) cap located on fuel injection manifold rail. Connect Fuel Pressure Gauge (310-012) to pressure relief valve. Place fuel pressure gauge hose in suitable container. Slowly open manual valve on fuel pressure gauge to relieve system pressure.