Opel Frontera UE. Manual - part 248

6E1–290

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

IMPORTANT:

An eight–digit identification number is

stamped on side of the fuel rail. Refer to this number when
you service the fuel rail or when a replacement  part is
required.

014RX035

1. Depressurize the fuel system. Refer to Fuel Pressure

Relief Procedure. 

2. Disconnect the fuel inlet at the rear of the engine.
3. Disconnect the fuel return line at front of the engine.
4. Disconnect the injector electrical connectors.
5. Remove the nuts holding wiring harness onto fuel rail.
6. Remove the bolts retaining fuel rail to the intake

manifold.

Lift up the injectors carefully to separate them from intake
manifold.

Lift up the fuel rail with injectors as assembly. Do not sep-
arate the fuel injectors from fuel rail.

If an injector become separated from fuel rail, injector
backup O–ring and injector retainer clip must be replaced.

Drain residual fuel from fuel rail into an approved contain-
er.

014RX036

7. If removal of fuel pressure regulator is necessary.

Refer to Fuel Pressure Regulator Removal
Procedure. 

8. If removal of fuel injector is necessary. Refer to Fuel

Injectors Removal Procedure. 

014RX037

Installation Procedure

1. Install the fuel injectors if necessary. Refer to Fuel

Injector Installation Procedure. 

2. Install the fuel pressure regulator if necessary. Refer

to Fuel Pressure Regulator Installation Procedure. 

3. Place the fuel injector rail assembly on the manifold

and insert the injectors into each port by pushing fuel
rail.

014RX037

4. Install two fuel rail retaining bolts. Tighten fuel rail

retaining bolts to 19 Nm (14 lb ft)

5. Place wiring harness in its place and secure it with two

nuts.

6E1–291

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

6. Connect electrical connector to each fuel injector.

014RX036

7. Connect the fuel supply line securely. Do not over

tighten.

8. Connect the fuel return line securely. Do not over

tighten.

9. Connect the negative battery cable.

10. Crank the engine until it start. Cranking the engine

may take longer than usual due to trapped air in the
fuel system. Check for leak. If fuel leak is observed,
stop engine immediately. Before correct fuel leak, be
sure to depressurize system again.

014RX035

Fuel Tank

Removal Procedure

1. Disconnect the negative battery cable.
2. Remove fuel filer cap.

3. Drain the fuel from fuel filler neck.
4. Disconnect the fuel filler hose at fuel tank.
5. Disconnect the air breather hose at the fuel tank.
6. Disconnect the evaporator hose at the fuel tank.
7. Hold entire fuel tank at the bottom with stands.
8. Disconnect fuel supply lines and fuel return line at

near the fuel filter inside of body frame.

041RX005

9. Remove four bolts (two in front and two in rear)

holding fuel tank to the frame.

10. Lower tank assembly from the vehicle a little to make

access space on top.

11. Disconnect  two electrical connectors at fuel pump.

041RX006

12. Remove fuel tank assembly from the vehicle.
13. Remove four nuts retaining tank under guard to the

tank.

6E1–292

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

14. Remove the tank from the guard.

041RX002

Installation Procedure

1. Secure fuel tank into under guard with four retaining

bolts, if necessary.

2. Place the fuel tank assembly onto stands.
3. Lift the fuel tank assembly near the position.
4. Connect two electrical connectors at fuel pump.
5. Lift the fuel pump to its position and secure it with four

mounting bolts. Make sure that all hoses and fuel
lines are out of way between the fuel tank and the fuel
tank bracket. Tighten the fuel tank retaining bolts to
36 Nm (27 lb ft).

041RX007

6. Connect fuel supply and return lines.

7. Connect the fuel filler hose, the air breather hose and

EVAP hose onto fuel tank and secure them with
clamps.

041RX006

8. Pour fuel into fuel tank.
9. Install fuel filler cap securely.

10. Connect the battery negative cable.

041RX005

Throttle body (TB)

Removal Procedure

1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to Cooling System.
3. Remove the air intake duct. Refer to Air Intake Duct

Removal Procedure. 

4. Remove the accelerator cable from throttle. Refer to

Accelerator Cable Assembly Removal Procedure. 

6E1–293

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

5. Disconnect the electrical connectors from the throttle

position sensor and the idle air control valve solenoid.

6. Disconnect all vacuum hoses below air horn.
7. Disconnect coolant lines.

014RX025

8. Remove the mounting bolts retaining the throttle body

the intake manifold.

9. Lift up the throttle body from the intake manifolds.

014RX040

10. Remove the gaskets from the intake manifolds.

11. Remove the IAC. Refer to Idle Air Control Valve

Solenoid Removal Procedure. 

12. Remove TPS. Refer to Throttle Position Sensor

Removal Procedure. 

Inspection Procedure

NOTE: Do not use solvent of any type when you clean the
gasket surfaces on the intake manifold and the throttle
body assembly. The gasket surface and the throttle body
assembly may be damaged as results.

1. If the throttle body gasket needs to be released,

remove any gasket material that may be stuck to the
mating surfaces of the manifold.

2. Do not leave any scratches in the aluminum casting.

014RX041

Installation Procedure

1. Install IAC valve onto the throttle body. Refer to Idle

Air Control Valve Solenoid Installation Procedure. 

2. Install TPS onto the throttle body if necessary. Refer

to TPS Installation Procedure.

3. Place the gasket then the throttle body on the

manifold.

4. Install four mounting bolt. Tighten the throttle body

mounting bolt to 13.5 Nm (10 lb ft).

014RX041

5. Connect coolant line and secure them with clamps.
6. Connect all vacuum hoses and secure them with

clamps if necessary.

7. Install accelerator control cable bracket onto the

throttle body.