Overview - Crankcase Ventilation

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2017 Audi S3, 2017 Audi RS 3, 2017 Audi A3 Quattro, 2016 Audi S3, and 2016 Audi A3 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Crankcase Ventilation Exploded View

Courtesy of AUDI OF AMERICA, LLC

Cylinder Head Cover
Seal
- Always 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
- Always replace after removing
Hose
- For the crankcase ventilation
- To the turbocharger
Bolt
- 4 Nm
- Thread cutting
- Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
Seal
- Always replace after removing
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.

Fig 2: Oil Seperator Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts to 9 Nm in the following sequence: -1 to 7-.