Overview - Crankcase Ventilation

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2017 Audi S3, 2017 Audi A3 Quattro, 2016 Audi S3, 2016 Audi A3 Quattro, and 2016 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Crankcase Ventilation

Courtesy of AUDI OF AMERICA, LLC

Cylinder Head Cover
Seal
- Replace after removing
Hose
- To the EVAP Canister Purge Regulator Valve 1 -N80-
Oil Separator
- Removing and Installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
Seal
- Replace after removing
Hose
- For the crankcase ventilation
- To the turbocharger
Bolt
- 4 Nm
- Thread cutting
Seal
- Replace after removing
Bolt
- Thread cutting
- Tightening Specifications and Sequence
  - Rest of World version. Refer to Fig 2.
  - China market version. Refer to Fig 3.

Oil Separator - Tightening Specification and Sequence, Rest of World Version

Fig 2: Oil Separator - Tightening Sequence (Rest of World Version)

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-.

Oil Separator - Tightening Specification and Sequence, China Market Version

Fig 3: Oil Separator - Tightening Sequence (China Market Version)

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-.