A4 Mk2
| Intake manifold - exploded view |
| 1 - | Screw for intake air temperature sender 2 -G299- |
| q | 5 Nm |
| 2 - | Intake air temperature sender 2 -G299- |
| 3 - | Intake manifold |
| q | Removing and installing → Chapter |
| q | After the intake manifold has been removed or renewed, intake manifold flap potentiometer -G336- (item 10) must be adapted to the engine control unit -J623-, see vehicle diagnostic and service information system -VAS 5052 A-, “Guided Function” |
| 4 - | Activated charcoal filter solenoid valve 1 -N80- |
| 5 - | Bolt for single-plunger high-pressure pump |
| q | 3x |
| q | 10 Nm |
| 6 - | Fuel pressure regulating valve -N276- |
| 7 - | Mechanical single-plunger high-pressure pump |
| q | With fuel pressure regulating valve -N276- and fuel pressure sender, low pressure -G410- |
| q | An electric fuel pump (fitted in fuel tank) supplies fuel to the mechanical high-pressure pump at a pressure of approx. 6 bar. |
| q | When installing the high-pressure fuel pump, it is essential to ensure that no dirt enters the fuel system. |
| q | The fuel system must not be under pressure; procedure for reducing fuel pressure → Chapter |
| q | Fuel pipes must be free of tension when installed. |
| q | Removing and installing → Chapter |
| 8 - | Connection for fuel return pipe to fuel tank |
| q | Renew bolt |
| q | Tighten connecting piece to 40 Nm (always make sure that connecting piece is tightened to specified torque before installing fuel line) |
| q | Fuel pipe must be free of tension when installed (make sure all parts are clean) |
| q | Tightening torque: 25 Nm |
| 9 - | Fuel supply pipe to fuel rail |
| q | Tighten connecting piece to 30 Nm (always make sure that connecting piece is tightened to specified torque before installing fuel line) |
| q | Fuel pipe must be free of tension when installed (make sure all parts are clean) |
| q | Tightening torque: 30 Nm |
| 10 - | Intake manifold flap motor -V157- with intake manifold flap potentiometer -G336- |
| q | After the fuel rail has been removed or renewed, intake manifold flap potentiometer -G336- must be adapted to the engine control unit -J623-, see vehicle diagnostic and service information system -VAS 5052-, “Guided Function” |
| q | Removing and installing → Chapter |
| 11 - | Bolt for intake manifold flap motor -V157- with intake manifold flap potentiometer -G336- |
| q | 3x |
| q | 7 Nm |
| 12 - | Intake manifold support |
| 13 - | Bolt for intake manifold support |
| q | 23 Nm |
| 14 - | Throttle valve module -J338-, throttle valve drive (electric throttle operation) -G186- |
| q | With throttle valve drive angle sender 1 -G187- and throttle valve drive angle sender 2 -G188- |
| q | After the throttle valve module -J338- has been renewed, it must be adapted to the engine control unit -J623- (Basic setting, Display group 60), see “Guided Fault Finding”. |
| 15 - | Bolt for throttle valve module -J338- |
| q | 4x |
| q | 7 Nm |
| 16 - | Securing nut for intake manifold support |
| q | 10 Nm |
| 17 - | Seal |
| q | Renew |
| 18 - | Fuel rail |
| q | Removing and installing → Chapter |
| q | After the fuel rail has been removed or renewed, intake manifold flap potentiometer -G336- must be adapted to the engine control unit -J623-, see vehicle diagnostic and service information system -VAS 5052-, “Guided Function” |
| 19 - | Fuel pressure sender -G247- |
| q | 22 Nm |