A3 Mk2
Fuel rail - exploded view |
1 - | Radial compensation element |
q | Renew if damaged |
2 - | Injector |
q | With combustion chamber ring seal (teflon ring seal): always renew |
q | Renew O-rings |
q | Ensure correct installation position. |
q | Removing and installing → Chapter |
3 - | Support ring |
4 - | Fuel rail |
q | Removing and installing → Chapter |
5 - | Fuel pressure sender -G247- |
q | 22 Nm |
q | Tighten connecting piece to 30 Nm |
6 - | Fuel pressure sender for low pressure -G410- |
7 - | Fuel pressure regulating valve -N276- |
8 - | 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 when installing the high-pressure pump; procedure for reducing fuel pressure → Chapter |
q | Fuel pipes must be free of tension when installed. |
q | Removing and installing → Chapter |
9 - | Activated charcoal filter solenoid valve 1 -N80- |
10 - | Throttle valve module -J338-, throttle valve drive for electric throttle -G186- |
q | Throttle valve drive angle sender 1 for electric throttle -G187- and throttle valve drive angle sender 2 for electric throttle -G188- |
q | After the throttle valve module -J338- has been renewed, it must be adapted to the engine control unit -J623-, see vehicle diagnostic and service information system -VAS 5052 A-“Guided Functions” |
q | Removing and installing → Chapter |
11 - | Intake air temperature sender -G42- |
q | 5 Nm |
12 - | Bolts for intake manifold |
q | 9 Nm |
13 - | Intake manifold |
q | Removing and installing → Chapter |