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 MANUALSBMW2018740IREPAIR AND DIAGNOSISENGINE MECHANICALFUEL SYSTEMFUEL SUPPLY SYSTEM -- REPAIR (G12)
2018 BMW 740i
Fuel Supply System -- Repair (G12)
2018 BMW 740iSECTION Fuel Supply System -- Repair (G12)
- 16 00 Fuel Supply
- 16 11 Fuel Tank With Fuel Filler Pipe
- 16 11 030 Removing and installing fuel tank (740i 2016-2022, 740i xDrive 2017-2022)
- 16 11 060 Removing and installing/replacing fuel filler pipe (all 7' series models 2016-2022, except PHEV)
- 16 11 030 Removing and installing fuel tank (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 11 060 Removing and installing/replacing fuel filler pipe (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 11 895 Replacing pressure temperature sensor (after vehicle diagnosis) (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 11 030 Removing and installing fuel tank (750i 2016-2019, 750i xDrive 2016-2022, M760i xDrive 2017-2022)
- 16 12 Lines
- 16 12 010 Removing and installing or replacing carbon canister (all 7' series models 2016-2022, except PHEV)
- 16 12 054 Replacing rear purge air line (740i 2016-2022, 740i xDrive 2017-2022, 740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 12 059 Replacing rear fuel supply line (740i 2016-2022, 740i xDrive 2017-2022, 740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 12 010 Removing and installing or replacing carbon canister (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 12 060 Removing and installing the carbon canister (US version) (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 12 065 Replacing the carbon canister (US version) (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 12 054 Replacing rear purge air line (750i 2016-2019, 750i xDrive 2016-2022, M760i xDrive 2017-2022)
- 16 12 059 Replacing rear fuel supply line (750i 2016-2019, 750i xDrive 2016-2022, M760i xDrive 2017-2022)
- 16 13 Ventilation, Emission Monitoring
- 16 13 521 Removing and installing/replacing pressure switch for Natural Vacuum Leak Detection (after vehicle diagnosis) (all 7' series models 2016-2022)
- 16 13 522 Removing and installing/replacing temperature sensor for Natural Vacuum Leak Detection (after vehicle diagnosis) (all 7' series models 2016-2022)
- 16 13 100 Remove & install fuel tank isolation valve (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 14 Delivery, Preparation And Content Measurement, Control Units, Electric Fuel Pump
- 16 14 010 Remove and install/replace fuel pump (s) (vehicles without auxiliary heater) (all 7' series models 2016-2022, except PHEV)
- 16 14 010 Remove and install/replace fuel pump (s) (vehicles with stationary heating system) (all 7' series models 2016-2022, except PHEV)
- 16 14 065 Removing and installing/replacing dust filter for Natural Vacuum Leak Detection (all 7' series models 2016-2022)
- 16 14 090 Removing and installing/replacing delivery unit (vehicles with stationary heating system) (all 7' series models 2016-2022, except PHEV)
- 16 14 090 Removing and installing/replacing delivery unit (vehicles without auxiliary heater) (all 7' series models 2016-2022, except PHEV)
- 16 14 500 Removing and installing/replacing control unit for electric fuel pump (after vehicle diagnosis) (all 7' series models 2016-2022)
- 16 14 500 Removing and installing/replacing the control unit for the electric fuel pump (after vehicle diagnosis) (all 7' series models 2016-2022)
- 16 14 010 Remove and install/replace fuel pump (s) (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 16 14 090 Removing and installing/replacing delivery unit (740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
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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.