Dodge Nitro. Manual — part 672

1. Disconnect negative battery cable at battery. Isolate end of cable.

2. Remove dress-up cover from top of engine.

Fig. 64: Fuel Injectors - 2.8L Diesel
Courtesy of CHRYSLER LLC

3. Disconnect fuel line fittings (2) and (4) and remove four fuel lines (3). Note and mark position of each

fuel line while removing.

CAUTION: Cleanliness cannot be overemphasized when handling or replacing diesel

fuel system components. This especially includes the fuel injectors, high-
pressure fuel lines and fuel injection pump. Very tight tolerances are used
with these parts. Dirt contamination could cause rapid part wear and
possible plugging of fuel injector nozzle tip holes. This in turn could lead
to possible engine misfire. Always wash/clean any fuel system component
thoroughly before disassembly and then air dry. Cap or cover any open
part after disassembly. Before assembly, examine each part for dirt,
grease or other contaminants and clean if necessary. When installing new
parts, lubricate them with clean engine oil or clean diesel fuel only.

CAUTION: WHEN LOOSENING OR TIGHTENING HIGH-PRESSURE LINE

FITTINGS ATTACHED TO A SEPARATE FITTING, USE A BACK-UP
WRENCH ON FITTING. DO NOT ALLOW FITTING TO ROTATE.
DAMAGE TO BOTH FUEL LINE AND FITTING WILL RESULT.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

4. Remove fuel line clamp bolt (10).

5. Disconnect rail-to-injection pump high-pressure fuel line fittings (9) and (11) and remove fuel line (12).

Note and mark position of fuel line while removing.

INSTALLATION

HIGH-PRESSURE FUEL LINES

All high-pressure fuel lines are of the same length and inside diameter. Correct high-pressure fuel line usage
and installation is critical to smooth engine operation.

Fig. 65: Fuel Injectors - 2.8L Diesel
Courtesy of CHRYSLER LLC

CAUTION: Cleanliness cannot be overemphasized when handling or replacing diesel

fuel system components. This especially includes the fuel injectors, high-
pressure fuel lines and fuel injection pump. Very tight tolerances are used
with these parts. Dirt contamination could cause rapid part wear and
possible plugging of fuel injector nozzle tip holes. This in turn could lead
to possible engine misfire. Always wash/clean any fuel system component
thoroughly before disassembly and then air dry. Cap or cover any open
part after disassembly. Before assembly, examine each part for dirt,
grease or other contaminants and clean if necessary. When installing new
parts, lubricate them with clean engine oil or clean diesel fuel only.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

1. Position the injectors with the clamp and washer into the cylinder head seat.

2. Hand tighten the injector clamp bolts.

3. Install the high pressure fuel line.

4. Hand tighten the high pressure fuel line.

5. Torque the fuel injector clamp bolts to 32 Nm (23 ft. lbs.).

6. Torque the high pressure fuel rail nuts to 25 Nm (221 in. lbs.).

7. Torque the high pressure fuel line on the fuel injector to 28 Nm (247 in. lbs.).

8. Torque the high pressure fuel line on the fuel rail to 5 Nm (44 in. lbs) +75 degrees.

MOTOR - FUEL PUMP

DESCRIPTION

DESCRIPTION

An engine mounted, low-pressure mechanical fuel pump is not used with the 2.8L diesel engine.

An electric fuel pump is mounted to the fuel pump module. The pump supplies a low-pressure fuel supply to the
engine.

Fuel is drawn in through a filter at the bottom of the module and pushed through the electric motor gearset to
the pump outlet.

The electric fuel pump is not a separate, serviceable component. The entire fuel pump module must be replaced.

MODULE - FUEL PUMP

REMOVAL

REMOVAL

CAUTION: WHEN LOOSENING OR TIGHTENING HIGH-PRESSURE LINE FITTINGS

ATTACHED TO A SEPARATE FITTING, USE A BACK-UP WRENCH ON
FITTING. DO NOT ALLOW FITTING TO ROTATE. DAMAGE TO BOTH FUEL
LINE AND FITTING WILL RESULT.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

Fig. 66: Locating 2.8L Diesel Fuel Pump Module
Courtesy of CHRYSLER LLC

1. The 2.8L diesel fuel pump module (2) is located on the top of fuel tank.

Fig. 67: Identifying Drive Breaker Bar, Lockring Remover/Installer Tool 9340 & Lockring
Courtesy of CHRYSLER LLC

2. Drain and remove fuel tank.

3. Note rotational position of module before attempting removal. An indexing arrow is located on top of

module for this purpose.

4. Position special Lockring Remover/Installer tool 9340 (3) into notches on outside edge of lockring (5).

5. Install 1/2 inch drive breaker bar (1) to special Lockring Remover/Installer tool 9340 (3).

6. Rotate breaker bar counter-clockwise to remove lockring.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro