Note: Please read the warning before starting the procedure paragraph 1.
Caution: The following procedure describes only how to relieve pressure in the system, not how to remove fuel from the system. Take appropriate precautions before disconnecting system components.
1. The system described in this paragraph includes an electric fuel pump, fuel filter, fuel injectors, pressure regulator, and metal tubes and hoses connecting all components together, all submerged in the fuel tank. This system contains fuel that is under pressure when the engine is running or the ignition is on. Pressure remains in the system for some time after the ignition is turned off and must be restored to a controllable state if any components are disconnected for servicing
2. Disconnect the ground cable from the battery as described in chapter 5A.
3. Open the fuel filler door. Temporarily remove the cap to relieve any pressure in the tank. Put the cap back on the filler neck.
4. If equipped, remove the top engine cover.
5. Place a rag under the connection of the fuel supply line to the fuel rail on the intake manifold, wrap the connection with the rag.
6. Using two wrenches, loosen the coupling nut to relieve pressure. Leave a rag around the open joint while working on the system.
7. When finished, tighten the line connection with two open-end wrenches.
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