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How do you replace the fuel pump in a 1991 Infiniti G20?

To replace the fuel pump in a 1991 Infiniti G20, follow these steps:

Note: This procedure requires removing the fuel tank and should be performed in a well-ventilated area.

1. Relieve fuel system pressure:

- Turn the key to "ON" (do not start the engine) and let it sit for a few seconds to pressurize the fuel system.

- Turn the key to "OFF".

- Press the fuel pressure release valve on the fuel injector rail to relieve the pressure.

2. Remove the rear seat:

- Pull up on the front of the rear seat cushion to unhook it from the retaining clips.

- Lift the front of the seat cushion and remove it from the vehicle.

- Remove the two bolts holding the rear seatback to the floor.

- Fold down the rear seatback to access the fuel tank.

3. Remove the fuel tank:

- Disconnect the fuel line and electrical connector from the fuel tank.

- Loosen the fuel tank mounting strap bolts.

- Lower the fuel tank and remove it from the vehicle.

4. Remove the fuel pump assembly:

- Remove the lock ring that secures the fuel pump assembly to the fuel tank.

- Pull the fuel pump assembly out of the fuel tank.

5. Install the new fuel pump assembly:

- Insert the new fuel pump assembly into the fuel tank.

- Replace the lock ring and tighten it securely.

6. Reinstall the fuel tank:

- Raise the fuel tank into position and secure it with the mounting strap bolts.

- Reconnect the fuel line and electrical connector.

7. Test the fuel system:

- Turn the key to "ON" and let the fuel system pressurize for a few seconds.

- Start the engine and verify that there are no leaks or unusual noises.

8. Reinstall the rear seat:

- Secure the rear seatback with the two bolts.

- Lift the rear seat cushion into position and hook it into the retaining clips.