Removing the upper part of the intake manifold
1. Disconnect the battery.
2. Remove the air filter housing.
3. Disconnect the wiring connector from the throttle body.
4. Remove the pressure sensor, ignition coils, air temperature sensor, unscrew the two bolts 8 securing the throttle valve and the bolts securing the upper part of the intake manifold (Fig. 2.51).
Fig. 2.51. Remove the pressure sensor, ignition coils, air temperature sensor, unscrew the two bolts 8 securing the throttle valve and the bolts securing the upper part of the intake manifold.
Installation
5. Installation is carried out in the reverse order of removal. If necessary, replace the manifold and throttle valve gaskets. Tighten the intake manifold bolts in the recommended order. Tighten the throttle valve bolts, air filter housing bolts.
Tightening torques
- Intake manifold bolts - 9 Nm.
- Throttle body bolt - 12 Nm.
- Air filter bolt - 9 Nm.
Removing the lower part of the intake manifold
Caution: Be careful when removing the injectors or fuel rail as they may contain a small amount of fuel.
6. Remove the intake manifold.
7. Disconnect the battery, disconnect the wiring connector 1 from the pressure sensor in the hydraulic power steering, the fuel line from the fitting 2 of the fuel rail (Fig. 2.52).
Fig. 2.52. Disconnect the battery, disconnect wiring connector 1 from the power steering pressure sensor, and the fuel line from fitting 2 of the fuel rail.
8. Loosen the two bolts 3 securing the fuel rail casing, two bolts 4 securing the fuel rail and remove the fuel rail (fig. 2.53). Disconnect wiring connector 5.
9. Unscrew bolts 6 (12 pieces) air distributor mounts and remove it (Fig. 2.54a,b).
Fig. 2.53. Loosen two bolts 3 securing the fuel rail casing, two bolts 4 securing the fuel rail and remove the fuel rail. Disconnect wiring connector 5.
Fig. 2.54a. Unscrew bolts 6 (12 pieces) air distributor mounts and remove it.
Fig. 2.54b. Unscrew bolts 6 (12 pieces) air distributor mounts and remove it.
Installation
10. Installation is carried out in the reverse order of removal.
Tightening torques
- Air distributor mounting bolts - 21 Nm.
- Intake manifold mounting bolts - 9 Nm.
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