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.
2011 BMW 128i 2D Convertible, N51, StandardFACTORY OEM SERVICE PROCEDURE
Fuel Supply System - Repair (N51)
- Drawing Off Of Fuel System
- 16 00 General function description for fuel supply systems
- 16 00... Fuel supply system (petrol/gasoline)
- 16 00 005 Draining and filling fuel tank
- 16 00 100 Checking fuel tank and tank ventilation system for leaks
- 16 00 102 Checking fuel tank and tank venting system for leaks with tank leakage diagnosis module (DMTL)
- 16 00 510 Conducting leak test on fuel tank and tank venting system
- Fuel Tank With Mounting
- 16 11 030 Removing and installing or replacing fuel tank (petrol/gasoline)
- 16 11 030 Removing and installing/replacing fuel tank (US vehicles with N51 engines)
- 16 11 048 Removing and installing/replacing fuel filter with pressure regulator (US cars with N51 engines)
- 16 11 060 Removing and installing/replacing fuel filler pipe (US vehicles with N51 engines)
- 16 11 071 Replacing rubber sleeve between fuel filler pipe and fuel tank
- 16 11 130 Checking filler cap pressure relief valve
- 16 11 350 Replacing clamping bands for fuel tank
- Fuel Delivery, Sensor For Display
- 16 12... Checking repumping function of suctionjet pump with BMW diagnosis system
- 16 12 001 Removing and installing or replacing fuel gauge sensor (right side / US cars with N51 engines)
- 16 12 001 Removing and installing/replacing fuel gauge sensor (left side / US cars with N51 engines)
- 16 12 010 Removing and installing or replacing carbon canister
- 16 12 010 Removing and installing/replacing carbon canister (DMTL)
- Fuel Deaeration
- Fuel Pump
- 16 14 010 Removing and installing/replacing fuel pump (US vehicles with N51 engines)
- 16 14 060 Removing and installing/replacing dust filter for tank leak diagnosis module (DMTL)
- 16 14 070 Removing and installing/replacing vent hose with strainer for carbon canister
- 16 14 500 Removing and installing or replacing control unit for electric fuel pump
Factory Service Tools
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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.
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