Overview - Crankcase Ventilation

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. 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
- There are different versions. Refer to the Parts Information for the allocation.
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-.