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Enginecrankshaft group, pistons > < Installing engine

A4 Mk1

Vacuum connections
Vacuum connections
   
Vehicles without secondary air system (view from above)
1 - To vacuum unit for intake manifold change-over
2 - To vacuum reservoir
3 - To connection on intake manifold
4 - Non-return valve
5 - Intake manifold change-over valve -N156-
6 - Fuel pressure regulator to T-connection
7 - To connection on intake manifold
8 - Intake manifold
  A10-0067
Engine (rear)
1 - Fuel pressure regulator
2 - Suction-jet pump
3 - Non-return valve
4 - To vacuum reservoir
5 - Air intake connection
6 - Connection between air intake connection/throttle valve unit
7 - Connection between suction jet pump/air intake connection
  A15-0064
Left side view
1 - Fuel pressure regulator
2 - Suction-jet pump
3 - To brake servo
4 - To air conditioner in footwell
5 - Air intake connection
6 - Connection on throttle valve unit to activated charcoal filter solenoid valve 1 -N80-
7 - Connection: suction-jet pump/intake manifold
  A15-0066
Vehicles with secondary air system:
1 - Combination valve for secondary air system (right-side)
q   On cylinder head (rear right)
2 - To activated charcoal filter solenoid valve 1 -N80-
q   On air cleaner
3 - Throttle valve module -J338-
4 - Secondary air inlet valve -N112-
5 - Non-return valve
6 - Intake manifold change-over valve -N156-
7 - To brake servo
8 - To fuel system diagnostic pump -V144-
q   On USA models
9 - Combination valve for secondary air (left-side)
10 - Fuel pressure regulator
11 - To vacuum reservoir
q   In front right wheel housing
12 - Intake manifold
13 - To actuator for intake manifold change-over

   

Enginecrankshaft group, pistons > < Installing engine