Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 256

ENGINE DRIVEABILITY AND EMISSIONS

6E–265

FUEL INJECTOR

Removal Procedure
NOTE: If the fuel injectors are leaking, the engine oil
may be contaminated with fuel. Check the oil for signs of
contamination and change the oil and filter if necessary.

NOTE: Use care in removing the fuel injector in order to
prevent damage to the fuel injector al connector pins or
fuel injector nozzles. The fuel injector is an al
component and should not be immersed in any type of
cleaner as this may damage the fuel injector.

Important:  Fuel injectors are serviced as complete
assembly only.

1. Disconnect the negative battery cable.

2. Disconnect al connector from fuel injector.

3. Remove the fuel rail. Refer to Fuel Rail Removal

Procedure.

4. Remove the fuel injector retainer clip.

5. Remove the fuel injector assembly from fuel rail.

6. Remove O-ring from the fuel injector.

7. Remove O-ring backup from fuel injector.

Inspection

1. Inspect O-ring for crack, damage or leaks.

2. Replace worn or damaged O-ring.

3. Lubricate the new O-rings with engine oil before

installation.

Installation Procedure

1. Lubricate the new O-ring with engine oil.

2. Install the O-ring backup on the fuel injector.

3. Install new O-ring on the fuel injector.

4. Install all four injector on the fuel rail.

5. Use new injector retainer clip to retain the injetor to

the fuel rail.

6. Coat the end of the fuel injector with engine oil.

6E–266

ENGINE DRIVEABILITY AND EMISSIONS

7. Install fuel rail assembly. Tighten the nuts to 19 N·m

(1.9 kgf·m). Refer to Fuel Rail Installation
Procedure.
Tighten the flare nut to 27 - 33 N·m (2.8 - 3.4 kgf·m).

8. Connect the negative battery cable.

FUEL PRESSURE REGULATOR

Removal Procedure
Caution: To reduce the risk of fire and personal
injury, it is necessary to relieve the fuel system
pressure before servicing the fuel system
components.
Caution: After relieving the fuel system pressure, a
small amount of fuel may be released when
servicing fuel lines or connections. Reduce the
chance of personal injury by covering the fuel line
fitting with a shop towel before disconnecting the
fittings. The towel will absorb any fuel that may leak
out. When the disconnect is completed, place the
towel in an approved container.

NOTE: Compressed air must never be used to test or
clean a fuel pressure regulator, as damage to the fuel
pressure regulator may occur.

NOTE: To prevent damage to the fuel pressure
regulator, do not immerse the pressure regulator in
solvent.

Removal Procedure

1. Depressurize the fuel system. Refer to Fuel

Pressure Relief Procedure.

2. Disconnect the negative battery cable.

3. Remove the fuel pump relay.

4. Disconnect the vacuum line form fuel pressure

regulator.

ENGINE DRIVEABILITY AND EMISSIONS

6E–267

5. Remove the fuel pressure regulator retaining screw.

6. Remove the fuel pressure regulator from fuel rail.

Installation Procedure

1. Insert the fuel pressure regulator into the fuel rail.

2. Install the fuel pressure regulator retaining bracket

and tighten with a screw.

3. Connect vacuum line onto the fuel pressure

regulator.

4. Install the fuel pump relay.

5. Connect the negative battery cable.

6. Crank the engine until it starts. Cranking the engine

may take longer than usual due to trapped air in the
fuel line.

7. Tighten the flare nut to 27 - 33 N·m (2.8 - 3.4 kgf·m).

6E–268

ENGINE DRIVEABILITY AND EMISSIONS

IGNITION COIL

Location
Back of the engine right-hand side.

Removal Procedure

1. Disconnect the negative battery cable.

2. Disconnect the ignition coil connector.

3. Disconnect four spark plug cables from the ignition

coil.

4. Loosen three bolts and remove ignition coil from the

bracket.

Installation Procedure

1. Tighten the ignition coil by three bolts.

2. Connect four spark plug cables to the ignition coil.

3. Connect a ignition coil connector to the ignition coil.

4. Connect the negative battery cable.

NOTE: Verify any DTCs (diagnosis Trouble Code) are
not stored after replacement.
Verify proper connection of spark plug cables for each
cylinders.