Replacing the engine ventilation line of cylinders 1 - 4 (X5 M)

Attention! 

Ignition coils must not be fouled by fuel.

The resistance of the silicone hose is reduced significantly by contact with fuel, which may cause the ignition coil to fail!

The silicone tube of the spark plug connector is coated with talc to reduce the pulling forces. The silicone tube must NOT be oiled or greased. This would greatly reduce the durability of the silicone hose, which can lead to a failure of the ignition coil.

Necessary preliminary work 

• Switch off the ignition
• Remove ACOUSTIC COVER .

Removal: 

Release screw (1).

Release expansion tank (2) for charge air cooler and place to one side.

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Release screws (1).

Remove holder (2) for expansion tank.

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Release screws (1).

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Unlock the engine ventilation line (1) at the locks (2).

Feed out the engine ventilation line (2) and remove.

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Installation: 

Insert and install the engine ventilation line (2).

Lock the engine ventilation line (1) at the locks (2).

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Tighten screws (1).

Tightening torque 11 15 1AZ. .

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Install holder (2) for expansion tank and fix in place using bolts (2).

Tighten screws (1).

Tightening torque 17 10 3AZ .

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Mount expansion tank (2) for charge air cooler onto holder and fix in place with bolt (1).

Tighten screw (1).

Tightening torque 17 10 2AZ .

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Required follow-up work: 

• Install ACOUSTIC COVER .