Exhaust valves

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

Place cylinder head on special tool 11 9 000.

Press valve spring down on spring retainer with special tools 11 0 009 and 11 0 346.

Fig 1: Pressing Valve Spring Down On Spring Retainer Using Special Tools 11 0 009 And 11 0 346

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Remove valve tapers with a magnet.

Remove valve spring and spring retainer.

Set down on special tool 11 4 480 in a tidy and orderly fashion.

Fig 2: Removing Spring And Spring Retainer

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IMPORTANT: Incorrect installation possible.
Incorrect installation will result in valve spring breakage!

Color marking (1) is normally on lower end of valve spring.

Installation:

Intake Violet/green or violet/yellow valve:

Exhaust White/green or white/yellow valve:

Fig 3: Identifying Color Marking On Lower End Of Valve Spring

Courtesy of BMW OF NORTH AMERICA, INC.

If the colors on the valve springs can no longer be identified, these must be replaced for safety reasons.

Arrangement:

Valve
Valve stem seal with spring plate, bottom
Valve spring
Top plate spring
Valve cotters

Fig 4: Identifying Valve Arrangement
Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME control unit.