Fuel System Pressure Release
WARNING: This page is about a different car, the 2003 Dodge SX, 2003 Dodge SRT-4, and 2003 Dodge Neon. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
The fuel system is under a constant pressure, even with the engine off. Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE
under FUEL SYSTEMS in REMOVAL & INSTALLATION - NEON, SRT-4 & SX (CANADIAN) article.