Fuel Pressure Relief
WARNING: This page is about a different car, the 1996 Pontiac Grand Am, 1996 Oldsmobile Achieva, and 1996 Buick Skylark. However, it is still accessible from the selected car via links, so may be relevant.
Fuel system is under pressure. Pressure must be relieved prior to servicing fuel system. Disconnect negative battery terminal. Loosen fuel filler cap. Install Fuel Pressure Gauge J-34730-1) on fuel pressure connector of fuel rail. Wrap shop towel around pressure connection when installing fuel pressure gauge to absorb fuel leakage. Install gauge bleed hose in container. Open bleed valve to bleed fuel pressure.