Fuel System Pressure Release
WARNING: This page is about a different car, the 1994 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect negative battery cable. Remove fuel filler cap. Remove cap from pressure test port on fuel rail. Position shop towels to soak up any spilled fuel. Using a small screwdriver or pin punch, push test port valve in to relieve fuel pressure. See Fig 1 . Install cap over test port. Reconnect negative battery cable.