Fuel Level Sensor: Service and Repair

FUEL SYSTEM
Removal and Installation

WARNING: When replacing fuel line parts, be sure to observe the following.
Put a "CAUTION FLAMMABLE" sign in workshop.
Be sure to furnish workshop with a CO2 fire extinguisher.
Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.

CAUTION: Before removing fuel line parts, carry out the following procedures:

a. Put drained fuel in an explosion-proof container and put the lid on securely.
b. Perform Fuel Pressure Release Procedure.

Fuel Tank, Fuel Pump Assembly, Fuel Lines:

c. Disconnect battery ground cable.
* Always replace O-ring and clamps with new ones.
* Do not kink or twist tubes when they are being installed.
* Do not tighten hose clamps excessively to avoid damaging hoses.
* After installing tubes, run engine and check for fuel leaks at connections.
* Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.

Fuel Pump / Fuel Level Sensor / Pressure Regulator / Fuel Filter:

REMOVAL - Fuel Pump / Fuel Level Sensor / Pressure Regulator / Fuel Filter
1. Perform Fuel Pressure Release Procedure.
2. Remove rear seat bottom.
3. Remove inspection hole cover located under the rear seat.
4. Disconnect electrical connector.
5. Remove the quick connectors.
6. Remove the six screws.






7. Pull out the fuel level sensor unit and fuel pump.
Do not damage the arm of the fuel level sensor and fuel tank temperature sensor.






8. Remove flange of fuel level sensor unit and fuel pump.
Using a screwdriver, remove the snap fit portion as shown in the figure.






9. Push fuel level sensor flange.
Using a screwdriver, remove the snap fit portion as shown in the figure.

10. Pull up the fuel level sensor.






11. Remove fuel filter from chamber.
Using a screwdriver, remove the snap fit portion as shown in the figure.






12. Remove fuel pump, then push down the fuel pump as shown in the figure.






13. Remove the pump support rubber from the fuel pump.

Fuel Pump / Fuel Level Sensor / Pressure Regulator / Fuel Filter:

INSTALLATION
Install in the reverse order of removal paying attention to the following.

Install the fuel filter and fuel pump with the tabs aligned, make sure a click sound of secure engagement is heard.

Securely connect the harness connector of the fuel pump.

Install the pressure regulator O-ring as follows.

CAUTION: When replacing, always use a new O-ring.
Handle it with bare hands. (Do not use gloves.)
Visually check the O-ring, mounting parts and mating parts for foreign materials and flaws.
Before installing, apply new engine oil.
To avoid damage, do not apply an excessive force (pulling or starching).


Install the pressure regulator as follows.

Fuel Pressure Regulator:

1. Insert the clip to the groove of the regulator.
2. With the clip installed, insert the regulator straight by matching the fuel filter protrusion and the clip notch.
3. Make sure that the fuel filter protrusion and clip notch are securely engaged.