Checking and replacing the fuel shut-off valve (Nissan Sunny B13)

The fuel shut-off valve on the high-pressure fuel pump opens the fuel supply when the ignition is turned on. It should be checked if the engine does not start or continues to run when the ignition is turned off.

1. Ask an assistant to turn on the ignition, and the valve should click.

2. Disconnect the fuel shut-off valve plug connection.

3. Connect a voltmeter or LED voltage tester to the cable harness plug and ground. Turn on the battery ignition (12V). Otherwise, check the wiring according to the diagram.

4. Connect an ohmmeter between the valve contact and ground. The resistance should be 0 ohms.

5. If necessary, unscrew the valve and check the ease of movement of the piston and the condition of the spring.

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6. Insert the new fuel shut-off valve and tighten to 20 N·m. Connect the cable.

7. Remove air from the fuel system.