Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2003 Nissan-Datsun Sentra SE-R, AutomaticFACTORY OEM SERVICE PROCEDURE

Removal and Installation: Installation

Installation is in the reverse order of removal. Connect the quick connector as follows:

Align mating marks on the fuel pump outlet and the quick connector for correct installation.
Align the push tabs with the quick connector slots.
Insert the fuel pump outlet into the center of the quick connector until you hear a click.

Fig 1: Connecting Fuel Pump Outlet Quick Connector

Courtesy of NISSAN MOTOR CO., U.S.A.

After connecting the quick connector, check that the quick connector is fully seated as follows:

Pull on the quick connector to make sure it is firmly connected.

Fig 2: Checking Quick Connector Is Firmly Connected
Courtesy of NISSAN MOTOR CO., U.S.A.
Apply fuel pressure to the fuel lines by turning the ignition switch ON (without starting the engine). Then check for fuel leaks at the hose connections.
Start the engine and increase engine speed, verify that there are no fuel leaks.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.