Leon Mk2
| Fuel rail - exploded view |
| 1 - | 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. |
| 2 - | Support ring |
| 3 - | Fuel rail |
| q | Removing and installing → Chapter. |
| 4 - | Single piston high pressure pump |
| q | With fuel pressure regulating valve -N276- |
| 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. |
| 5 - | Tappet with roller |
| 6 - | Fuel pressure regulating valve -N276- |
| 7 - | Bolts for high-pressure pump |
| q | replace |
| q | M6 thread = 8 Nm + 90° |
| q | M8 thread = 20 Nm. |
| 8 - | Connecting piece for fuel supply line |
| q | replace |
| q | 22 Nm |
| 9 - | Union nut for fuel supply line |
| q | 18 Nm |
| 10 - | Air flow control flaps |
| 11 - | Seal |
| q | replace |
| 12 - | Intake manifold |
| q | Removing and installing → Chapter. |
| 13 - | Vacuum unit for air flow control flaps |
| q | check → Chapter |
| 14 - | Throttle valve module -J338-, throttle valve drive for electric throttle operation -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 renewing the throttle valve module -J338-, it must be adapted to engine control unit -J623- using a → vehicle diagnosis tester in „Guided functions“. |
| 15 - | Bolts for intake manifold |
| q | Pre-tighten to 3 Nm and tighten to 9 Nm |
| 16 - | Intake manifold flap potentiometer -G336- |
| q | Removal and installation involves removing the intake manifold → Chapter |
| 17 - | Fuel pressure sender -G247- |
| q | 27 Nm |
| q | Lubricate threads lightly with clean engine oil |
| q | check → Chapter |
| q | Removing and installing → Chapter. |
|
