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 MANUALSBMW2011335I 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE - REPAIR - E90 (N55)
2011 BMW 335i 2D Convertible, Standard
Engine - Repair - E90 (N55)
2011 BMW 335i 2D Convertible, StandardSECTION Engine - Repair - E90 (N55)
- Safety Information
- Engine, General
- 11 00 039 Checking compression of all cylinders (N55)
- 11 00 300 Engine oil consumption measurement
- 11 00... Handling components after flood damage
- 11 00 Mounting engine on assembly stand (N55)
- 11 00... Overview of consumables (BMW Electronic Parts Catalogue)
- 11 00 050 Removing and installing engine (N55)
- 11 00 670 Securing engine in installation position (N55)
- 11 00... Service - engine oil (N55)
- Cylinder Head And Cylinder Head Cover
- 11 12 729 Checking cylinder head for water leaks (N55)
- 11 12 040 Removing and installing all ignition coils and injector wells (N55)
- 11 12 100 Removing and installing cylinder head (N55)
- 11 12 000 Removing and installing/sealing cylinder head cover (N55)
- 11 12 101 Replacing cylinder head gasket (N55)
- 11 12 719 Resurfacing cylinder head lower face (N55)
- Oil Sump
- Housing Cover
- Crankshaft With Bearing
- Flywheel
- Vibration Damper
- Connecting Rod With Bearing
- Piston With Rings And Pin
- V-Ribbed Belt With TENSIONER/Deflection Element
- Camshaft
- 11 31 505 Adjusting timing of camshaft(s) (N55)
- 11 31 005 Checking camshaft timing (N55)
- 11 31 090 Installing and removing/replacing chain tensioner piston (N55)
- 11 31 028 Removing and installing/replacing exhaust camshaft (N55)
- 11 31 025 Removing and installing/replacing intake camshaft (N55)
- 11 31 051 Replacing timing chain (N55) from March 2012
- 11 31 051 Replacing timing chain (N55) up to March 2012
- Rocker Arm With Bearing Mount
- Valves With Springs
- Variable Camshaft Timing
- Variable Valve Gear
- Oil Supply
- Oil Pump With Filter And Drive
- 11 41 010 Removing and installing/replacing chain module for oil pump/vacuum pump (N55) from March 2012
- 11 41 010 Removing and installing/replacing chain module for oil pump/vacuum pump (N55) up to March 2012
- 11 41 115 Removing and installing/replacing hydraulic valve (N55)
- 11 41 000 Removing and installing/replacing oil pump (N55) from March 2012
- 11 41 000 Removing and installing/replacing oil pump (N55) up to March 2012
- Oil Filter And Lines
- Water Pump With Drive
- Thermostat And Connections
- Intake Manifold
- Supercharger With Control
- Vacuum Pump
- Emission Control, Oxygen Sensor
RENDER: 1.0x
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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.