Overview - Crankcase Ventilation

WARNING: This page is about a different car, the 2022 Audi A6 Quattro and 2021 Audi A6 Quattro. 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
Crankcase Pressure Sensor -G1068-
- Equipped on some models
- Removing and Installing. Refer to Crankcase Pressure Sensor -G1068-, EMOVING AND INSTALLING .
O-Ring
- Replace if damaged or leaking
Bolt
- Tightening Specifications and Sequence. Refer to Fig 2.
- Thread cutting
- Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
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 Specifications and Sequence

Courtesy of AUDI OF AMERICA, LLC

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