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 MANUALSBMW2021I3 RANGE EXTENDERREPAIR AND DIAGNOSISGENERAL INFORMATIONOEM GENERAL INFORMATIONGENERAL ORPHAN DATATANK VENTILATION SYSTEM
2021 BMW i3 Range Extender
Tank ventilation system
2021 BMW i3 Range ExtenderSECTION Tank ventilation system
16 13 TANK VENTILATION SYSTEM - TIGHTENING TORQUES SPECIFICATIONS
| Type | Thread | Tightening specifications | Dimension | |||
|---|---|---|---|---|---|---|
| 1AZ Carbon canister to holder | I01 / I12 | M6 | 8 Nm | |||
| 2AZ Fuel tank return check valve to fuel tank | I01 / I12 | M6 | 8 Nm | |||
| 3AZ Dust filter to carbon canister | I01 | 2.5 Nm | ||||
| 4AZ Tank vent line retaining plate to rear axle module | I12 | M6x16 | 8 Nm | |||
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.