Contents: Method 1 🠛 Method 2 🠛
Warning! The following procedure simply relieves pressure in the fuel system. Remember that fuel still remains in the system components, so take precautions before disconnecting them.
Note: The fuel system consists of an in-tank fuel pump, fuel filter, injector, and throttle body pressure regulator. These components are connected by metal pipes and flexible hoses. All contain fuel under pressure when the engine is running and/or the ignition is on. Pressure remains in the system for some time even after the ignition is turned off and must be relieved before any component is disconnected.
Method 1
1. Disconnect the ground cable from the battery (refer to Chapter Engine electrical equipment for Scenic models).
Warning: If the car radio in your car is coded, make sure you know the code before disconnecting the battery.
2. Place a suitable container under the coupling to be disconnected and have a rag ready.
3. Loosen the joint or union nut slowly to avoid sudden pressure release. After the pressure is released, disconnect the fuel line. Plug the ends of the pipes to prevent dirt from entering the fuel system.
Method 2
1. Remove the fuel pump relay located in the underhood fuse/relay box.
2. Start the engine and let it idle until it stalls due to lack of fuel. Then turn the starter several times.
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3. Turn off the ignition and install the fuel pump relay.