Fuel System Pressure Relief: MFI
WARNING: This page is about a different car, the 1995 Pontiac Trans Sport, 1995 Oldsmobile Silhouette, and 1995 Chevrolet Lumina APV. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect negative battery terminal. Loosen fuel filler cap. Install Fuel Pressure Gauge (J 34730-1) to fuel pressure test port on fuel rail. Wrap shop towel around pressure connection when installing fuel pressure gauge to absorb fuel leakage. Place bleed hose in container. Open bleed valve to relieve fuel pressure.