Intake Manifold Assembly Overview

Intake Manifold Assembly Overview

CAUTION!
Fuel system is under pressure! Before opening high pressure components of the fuel injection system, the fuel pressure must be relieved to residual pressure, procedures. Refer to --> [ High Side Fuel Pressure Releasing ] High Side Fuel Pressure Releasing.





1 Bolt, 5 Nm

• For the Intake Air Temperature (IAT) sensor.

2 Intake Air Temperature (IAT) Sensor (G42)

3 Evaporative Emission (EVAP) Canister Purge Regulator Valve 1 (N80)

• With double check valve - item 15 -, a single component.

4 Intake Manifold

• Removing and installing, refer to --> [ Intake Manifold with Fuel Rail ] Intake Manifold With Fuel Rail.

• Fuel fail, separating from the intake manifold, refer to --> [ Fuel Rail, Separating from the Intake Manifold ] Intake Manifold With Fuel Rail.

5 Vacuum Actuator

• For the variable intake manifold.

• Checking, refer to --> [ Variable Intake Manifold, Checking ] Testing and Inspection.

6 Bolts, 10 Nm

• For the high pressure pump.

• Always replace.

7 Connecting Piece

• For the fuel supply line from the fuel tank.

8 Fuel Pressure Regulator Valve (N276)

• High pressure pump with fuel pressure regulator valve assembly overview. Refer to --> [ High Pressure Pump with Fuel Pressure Regulator Valve Assembly Overview ] High Pressure Pump With Fuel Pressure Regulator Valve Assembly Overview.

9 High Pressure Pump

• With the fuel pressure regulator valve

• An electric fuel pump, located in the fuel tank, supplies fuel to the mechanical high pressure pump at a pressure of approximately 7 bar.

• When installing the high pressure pump, make sure that no dirt enters the fuel system.

• The fuel system must be pressureless to install the high pressure pump, releasing fuel pressure. Refer to --> [ High Side Fuel Pressure Releasing ] High Side Fuel Pressure Releasing.

• Install the fuel line to the fuel rail free from tension

• High pressure pump with fuel pressure regulator valve assembly overview. Refer to --> [ High Pressure Pump with Fuel Pressure Regulator Valve Assembly Overview ] High Pressure Pump With Fuel Pressure Regulator Valve Assembly Overview.

• Removing and installing, refer to --> [ High Pressure Pump ] High Pressure Pump.

10 Roller Tappet

• Remains inserted in the cylinder head after removing the high pressure pump, removable.

11 Connecting Piece, 22 Nm

• For the high pressure fuel line.

- Check the connection tightening specification before installing the fuel high pressure line.

• Always replace.

12 High Pressure Fuel Line to Fuel Rail

- Tighten the fuel high pressure line union nut hand tight. Align so it is free of stress.

• Union nut: 18 Nm.

13 Intake Manifold Runner Control (IMRC) Valve (N316)

14 Fuel Injector

• Cylinder 1 fuel injector, (N30).

• Cylinder 2 fuel injector, (N31).

• Cylinder 3 fuel injector, (N32).

• Cylinder 4 fuel injector, (N33).

• With combustion chamber seal (Teflon seal), always replace.

• Replace O-rings.

• Note correct installed position.

• Fuel Injector individual parts, refer to --> [ Fuel Injector Individual Parts ] Fuel Rail Assembly Overview.

• Removing and installing, refer to --> [ Fuel Injectors ] Fuel Injectors.

• Cleaning, refer to --> [ Throttle Valve Control Module, Cleaning ] Procedures.

15 Double Check Valve

• Checking, refer to --> [ Double Check Valve, Checking ] Testing and Inspection.

• With the EVAP canister purge regulator valve - item 3 -, as one unit.

16 Intake Manifold Support

17 Bolt, 23 Nm

• For the intake manifold support.

18 Nut, 10 Nm

• For the intake manifold support.

19 Bolts, 5 Nm

• For the throttle valve control module.

• Quantity: 4

20 Throttle Valve Control Module (J338)

• With the throttle drive (for Electronic Power Control (EPC)), throttle drive angle sensor 1 (for EPC) and throttle drive angle sensor 2 (for EPC).

• Removing and installing, refer to --> [ Throttle Valve Control Module ] Removal and Replacement.

• Cleaning, refer to --> [ Throttle Valve Control Module, Cleaning ] Procedures.

21 Seal

• Always replace.

• The rim of the sealing ring must fit into the groove provided for it inside the intake manifold.