Fuel Rail (Bank 1)

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.

General Information

The fuel rails transfer high-pressure fuel to the injectors from the high pressure fuel pump.

Bank 1 fuel rail (1).

Courtesy of NISSAN NORTH AMERICA, INC.
Bank 2 fuel rail (2).

WARNING: 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:

Do not 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.

Inspection Before Removal

Check the fuel rail for leaks, loose bolts, or any other problems.

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.

Removal

WARNING:

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:
- Do not 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.
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.

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 the fuel rail supply lines [high pressure (bank 1)]. Refer to Removal and Installation .
CAUTION: Do not reuse the fuel rail supply lines (high pressure).
Remove the injector supply lines [high pressure (bank 1)]. Refer to Removal and Installation .
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.
- Do not reuse the injector supply lines (high-pressure).
Tool

:-- - (J-54427)
Disconnect the harness connector from the fuel rail pressure sensor.
Remove the fuel rail bolts (A) and remove the fuel rail [bank 2 (1)] and mounting spacers (2) from the engine.

Courtesy of NISSAN NORTH AMERICA, INC.

NOTE: When removing the fuel rail, cap all of the open fuel system components with Tool.

Tool

:-- - (J-54427)

Inspection After Removal

CAUTION: To avoid possible fuel system damage caused by dirt or contaminants, use only electrical contact cleaner to clean internal passages of the fuel rail.

Inspect the fuel line connections at the fuel rail for cracks or scratches.
Check for a loose or damaged fuel pressure sensor and/or pressure relief valve. Replace parts if necessary.
NOTE: When replacing a fuel rail, the bank 2 fuel rail will be installed with a fuel pressure relief valve and the bank 1 will be installed with a fuel rail pressure sensor.

Installation

Install the mounting spacers (2), fuel rail [bank 1 (1)] and bolts (A) onto the engine.

Courtesy of NISSAN NORTH AMERICA, INC.
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.
NOTE:
- Make sure the spacers are installed correctly under the fuel rail. The rail will not seat properly without these spacers. The tops of the spacers have an arrow pointing outward from the engine.
- Do not torque the fuel rail bolts at this time.

Install the fuel rail supply line (high-pressure) and tighten nuts.

Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION: Do not reuse fuel rail supply line (high-pressure).

Supply line nuts (A)	: 33 N.m (3.4 kg-m, 24 ft-lb)
Supply line nuts (B)	: 37 N.m (3.8 kg-m, 27 ft-lb)

Tighten the fuel rail supply line (high pressure) bolts.

Fuel rail supply line bolts

: 7.4 N.m (0.75 kg-m, 65 in-lb)

Install the fuel rail to fuel rail supply line.

Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION: Do not reuse fuel rail-to-fuel rail supply line (high-pressure).

NOTE: Hand-tighten nuts and bolts first and then tighten the nuts and bolts to specification.

Supply line nuts (A) and (C)	: 33 N.m (3.4 kg-m, 24 ft-lb)
Bolts (B)	: 7.4 N.m (0.75 kg-m, 65 in-lb)

Position injector supply line [high-pressure) (1)] to proper injector on engine and tighten the nuts (A) and (B) hand-tight.

Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION: Do not reuse injector supply line (high-pressure).
NOTE:
- Injector numbering is noted on nut at injector side of line. Numbering refers to cylinder number. Cylinder numbering is denoted on the rocker covers. Injector side nuts (B) are colored black.
- Bank 2 shown, Bank 1 similar

Tighten the injector supply line nut (C), then tighten injector supply line nut (B) then tighten fuel rail bolts (A)

Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION: To avoid possible leaks, fuel system component damage or performance issues, always use the correct components, assemble in the correct order and tighten fuel system components to the specified torque.

NOTE: Bank 2 shown, Bank 1 similar

Fuel rail bolts (A)	: 18 N.m (1.8 kg-m, 13 ft-lb)
Injector supply line nut (B)	: 38 N.m (3.9 kg-m, 28 ft-lb)
Injector supply line nut (C)	: 38 N.m (3.9 kg-m, 28 ft-lb)

Installation of the remaining components is in the reverse order of removal.
NOTE:
- Prime the fuel system. Refer to Priming .
- Perform the CONSULT High-Pressure Fuel System Leak Test. Refer to High-Pressure Fuel System Leak Test .
- If the fuel rail (bank 1) was replaced, in CONSULT click the rail pres button on the Fuel or Timing System Table Reset in Work Support. Refer to CONSULT Function .
- Operate the engine and check for leaks.