Removal and Installation (CYLINDER 2 and CYLINDER 4): Removal

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Diesel fuel and diesel fuel vapor is flammable. To avoid risk of fire or burns, never smoke or allow sparks or flames (such as pilot lights, electrical switches, or welding equipment) in the work area. Never allow diesel fuel to spill onto a hot exhaust manifold which can cause a fire.
The fuel system (fuel pump, high pressure fuel lines, fuel rail, injectors) contain very high pressure fuel. To avoid the risk of personal injury or fire:
- Never loosen any fittings while the engine is running.
- Wait at least 10 minutes after shutting down the engine before loosening any fittings in the high-pressure fuel system to allow pressure to decrease to a lower level.
- Wear appropriate eye protection and protective equipment as high-pressure fuel spray can penetrate the skin.
- Never smoke or allow sparks or flames (such as pilot lights, electrical switches, or welding equipment) in the work area. Never allow diesel fuel to spill onto a hot exhaust manifold which can cause a fire.

CAUTION: To avoid possible engine and system damage or performance issues:

Brush away all dirt and debris from the area prior to opening any fuel, air intake, exhaust, cooling, aftertreatment or other engine system.
To avoid contamination, any open engine system ports must be closed immediately with clean care caps or an appropriate covering.
Do not allow any debris to fall into the engine.
Do not allow any chemical cleaners to enter the engine or any open systems during the cleaning process.

Remove air duct and air cleaner case (upper). Refer to Exploded View .
Remove bolts (A) securing the fuel filter housing (Stage 2) to the intake manifold and reposition fuel filter housing (Stage 2).

Courtesy of NISSAN NORTH AMERICA, INC.

NOTE: Fuel supply line, fuel return line, injector drain line, fuel pressure relief valve drain line, fuel pump supply and return lines do not need to be disconnected from fuel filter (Stage 2).
Remove injector supply line (high pressure) for cylinders 2 and 4. Refer to Exploded View .
Disconnect the harness connector from the fuel injector.
CAUTION: Do not disconnect the fuel injector harness connectors when the engine is running as this could damage the engine.

Disconnect the fuel injector drain line quick disconnect connector by pressing down and holding the connector tabs (B), then pulling up on the center button (A) as shown.

Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION: Do not reuse the O-rings.

NOTE: When removing the injector drain lines, cap all open fuel system components with Tool.

Tool	:-- - (J-54427)

Remove the fuel injector hold-down clamp bolt (A) and washer (B) from hold-down clamp of fuel injectors being removed.

Courtesy of NISSAN NORTH AMERICA, INC.
NOTE:
- Fuel injectors are held down in pairs with one hold-down clamp and bolt between the two injectors.
Install Tool (A) onto the rocker cover of the injectors to be removed then tighten the nut (B) onto the injector (1).

Courtesy of NISSAN NORTH AMERICA, INC.

Tool

:-- - (J-54402)
Use a suitable tool on the square drive portion of the Tool to apply constant pressure until fuel injector unseats from bore.
Slide fuel injector pairs out of their bores at the same time, along with the hold-down clamp.

Make sure the fuel injector sealing washer (3) remained on the tip of the fuel injector (1). If the sealing washer is not on the tip of the fuel injector, remove it from the fuel injector bore in the cylinder head.

Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION: Do not reuse the O-ring (2) or sealing washer (3).

NOTE:

A double stacked or incorrect sealing washer can cause high-pressure fuel leaks and/or performance problems because of incorrect fuel injector protrusion.

When removing the fuel injectors, cap all open fuel system components with Tool.

Tool	:-- - (J-54427)

Once the fuel injector has been removed, identify it with the appropriate cylinder number. If the fuel injectors are reused, they must be installed into the correct cylinders.