Removal
After installation, it is necessary to reinstall all cable fasteners that were removed or cut during dismantling.
Remove the engine covers.
Remove the ignition coils with output stages.
Remove the hose between the G70 air flow meter and the throttle control module.
Disconnect the 6-pin connector from the throttle valve control module J338 and the 2-pin connector from the activated charcoal canister solenoid valve 1 N80 and the crankcase ventilation valve.
Disconnect vacuum hoses 1-3 from the intake manifold. On cars with engine letter designations BAA and BMX, additionally remove vacuum hose 4 from the intake manifold.
Unscrew the mounting bolt 5 of the intake manifold support (Fig. 2.56).
Then unscrew the intake manifold mount on the left and right side of the manifold.
Disconnect the engine crankcase ventilation hose from the cylinder head cover.
Unscrew mounting bolts 1 and 2 on the intake manifold (Fig. 2.57).
Disconnect the vacuum hose from the intake manifold vacuum actuator.
Unbolt the intake manifold from the cylinder head.
Remove the inlet pipe and place it on a clean surface so as not to damage the vacuum drive element.
NOTE: The intake ports in the intake manifold and cylinder head should be covered with a clean rag.
On the front of the cylinder head cover, unscrew the holder for the wires to the knock sensor 1 G61 and the oil level and temperature sensor G266.
Remove the cylinder head cover.
Installation
Installation is carried out in the reverse order, taking into account the following features.
The intake manifold must first be bolted to the cylinder head.
Then tighten both heat shield bolts and the intake manifold support bolts.
Check the tightness of the fuel hoses.
Tightening torques
| Threaded connection | Tightening torque, Nm |
| Cylinder head cover to cylinder head | 10 |
| Intake manifold to cylinder head | 13 |
| Intake manifold to support | 20 |
| Heat insulating shield for exhaust manifold | 23 |
| Oil dipstick tube to intake manifold | 8 |
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