Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSBMW2008128I 2D COUPE, N51, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE - REPAIR (N51)VALVES WITH SPRINGS11 34 715 REPLACING ALL VALVE SPRINGS (N51)

2008 BMW 128i 2D Coupe, N51, Standard

11 34 715 Replacing All Valve Springs (N51)

2008 BMW 128i 2D Coupe, N51, StandardSECTION 11 34 715 Replacing All Valve Springs (N51)

Special tools required:

For the following special tools, refer to ENGINE - SPECIAL TOOLS (N51) .

11 0 346
11 4 480
11 9 000
11 9 017

Necessary preliminary tasks:

Remove cylinder head cover . See 11 12 000 REMOVING AND INSTALLING OR SEALING CYLINDER HEAD COVER (N51) .
Remove cylinder head . See 11 12 100 REMOVING AND INSTALLING/SEALING CYLINDER HEAD (N51) .
Remove exhaust camshaft . See 11 31 028 REMOVING AND INSTALLING/REPLACING EXHAUST CAMSHAFT (N51) .
Remove intermediate lever . See 11 37 010 REMOVING AND INSTALLING/REPLACING INTERMEDIATE LEVER (N51) .
Remove inlet camshaft . See 11 31 025 REMOVING AND INSTALLING/REPLACING INLET CAMSHAFT (N51) .
Remove roller cam follower . See 11 33 050 REMOVING AND INSTALLING/REPLACING ALL ROCKER ARMS (N51) .

Place cylinder head on special tool 11 9 000. See Fig 1.

Press down inlet valves with special tool 11 9 017. See Fig 1.

Exhaust valves with special tool 11 0 346.

Fig 1: Identifying Special Tools

Courtesy of BMW OF NORTH AMERICA, INC.

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. See 11 4 480 PLACEMENT BOARDS (2 X) .

Fig 2: Removing Valve Spring And Spring Retainer

Courtesy of BMW OF NORTH AMERICA, INC.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.