Necessary preliminary tasks

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Remove IGNITION COILS
Release ignition wiring harness . See 1251100 REPLACING WIRING HARNESS SECTION FOR IGNITION COIL (N52K, N51) or 1251100 REPLACING WIRING HARNESS SECTION FOR IGNITION COIL (N52, N52K) in cylinder head cover area
Remove TENSION STRUT

Unlock and detach vent hose (1).

If necessary, pull off metal bracket (2) in direction of arrow.

Release screws (3) on electric servomotor.

Tightening torque 11 37 3AZ .

NOTE: A further screw, which cannot be seen in the picture, must be released under the electric servomotor (4).

Fig 1: Pulling Metal Bracket

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Release screw on electric servomotor.

Tightening torque 11 37 3AZ .

Remove servomotor (4) in direction of arrow.

If necessary, release nuts (5).

Tightening torque 11 72 1AZ .

If necessary, remove secondary air valve (6).

IMPORTANT: Observe different screw lengths.
Installation location of screws (1 and 2) is specified by the different bushing shapes.

Release screws in area (1).

Tightening torque 11 12 5AZ .

Installation:

Replace aluminum screws.

Release threaded pin (2).

Tightening torque 11 12 5AZ .

Installation:

Replace aluminum screws.

Fig 2: Identifying Metal Bracket Screws Area And Threaded Pin

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Installation:

Slotted sleeves (2) for guiding ignition coils in cylinder head cover (1) must be replaced.

Remove slotted sleeves (2).

Fig 3: Identifying Cylinder Head Cover And Slotted Sleeves

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Installation:

Clean all sealing faces (1 and 2).

IMPORTANT: Do not use any metal-cutting tools.

Installation:

Replace gaskets (1 and 2).

Fig 4: Identifying Sealing Faces

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Assemble engine.