Overview - Crankcase Ventilation

WARNING: This page is about a different car, the 2024 Audi Q7 and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Crankcase Ventilation Components

Courtesy of AUDI OF AMERICA, LLC

Cylinder Head Cover
Hose
- To the EVAP Canister Purge Regulator Valve 1 -N80-
O-Ring
- Replace if damaged or leaking
Hose
- For the crankcase ventilation
- To the turbocharger
Tank Ventilation Pressure Sensor 1 -G950-
- Equipped on some models
- Removing and Installing. Refer to Tank Ventilation Pressure Sensor 1 -G950-, REMOVING AND INSTALLING .
O-Ring
- Replace if damaged or leaking
Bolt
- thread cutting
- Tightening Specifications and Sequence. Refer to Fig 2.
Oil Separator
- Removing and Installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
Seal
- Replace after removing

Oil Separator - Tightening Specifications and Sequence

Fig 2: Oil Separator - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

Existing threads:

-- Tighten the bolts to 8 Nm in the sequence -1 to 7-.

New tapping threads:

-- Install the bolts to 11 Nm in the sequence -1 to 7-.