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Home >> Audi >> 2001 >> allroad Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L V6 BITURBO - APB, Bel >> Engine - Assembly >> Engine, removing and installing >> Vacuum layout - partial systems >> Crankcase breather system

Crankcase breather system

NOTE: Depending on whether the vehicle has a manual transmission or an automatic transmission, the hose layout around the distributor piece (Item 2) will be different. This is because vehicles with automatic transmission also have a suction jet pump. See SUCTION JET PUMP (VEHICLES WITH AUTOMATIC TRANSMISSION) .
NOTE: The following list refers to items in Fig 1.
  1. - Connection on valve cover for cylinder bank 1 
  2. - Distributor piece 
  3. - Connection on crankcase 
  4. - Pressure-limiting valve 
  5. - Connection on valve cover for cylinder bank 2 
  6. - Fuel pressure regulator 
  7. - Non-return valve (arrow indicates direction of flow) 
  8. - Non-return valve (arrow indicates direction of flow)  . See also FUEL TANK BREATHER SYSTEM (EVAP SYSTEM) .
Fig 1: Identifying Crankcase Breather System Components With Vacuum Diagram
G02724952Courtesy of AUDI OF AMERICA, INC.