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1.8 Exploded view - fuel rail
1 - Radial compensation ele‐
ment
❑ Renew if damaged
2 - Injector
❑ With combustion cham‐
ber ring seal (teflon ring
seal): always renew
❑ Renew O-rings
❑ Ensure correct installa‐
tion position.
❑ Removing and installing
→ Chapter (page 23
)
3 - Support ring
4 - Fuel rail
❑ Removing and installing
→ Chapter (page 20
)
5 - Fuel pressure sender -
G247-
❑ Tightening torque: 22
Nm
❑ Tighten connecting
piece to 30 Nm
6 - Fuel pressure sender for
low-pressure section -G410-
7 - Fuel pressure regulating
valve -N276-
8 - Mechanical single-plunger
high-pressure pump
❑ With fuel pressure regu‐
lating valve -N276- and
fuel pressure sender,
low pressure -G410-
❑ An electric fuel pump (fitted in fuel tank) supplies fuel to the mechanical high-pressure pump at a pressure
of approx. 6 bar.
❑ When installing the high-pressure fuel pump, it is essential to ensure that no dirt enters the fuel system.
❑ The fuel system must not be under pressure when installing the high-pressure pump; procedure for
reducing fuel pressure → Chapter (page 3)
❑ Fuel pipes must be free of tension when installed.
❑ Removing and installing → Chapter (page 32)
9 - Solenoid valve 1 for activated charcoal filter -N80-
10 - Throttle valve module -J338- , throttle valve drive for electric throttle operation -G186-
❑ Angle sender 1 for throttle valve drive (electric throttle operation) -G187- and angle sender 2 for throttle
valve drive (electric throttle operation) -G188-
❑ After the throttle valve module -J338- has been renewed, it must be re-adapted to the Motronic control
unit -J220- (Basic setting, Display group 60), see → Vehicle diagnosis, testing and information system
VAS 5051; “Guided Function”
11 - Intake air temperature sender 2 -G299-
❑ Tightening torque: 5 Nm
12 - Bolts for intake manifold
Audi A3 2004 ➤
Direct petrol injection and ignition system (4-cyl. 2.0 ltr. 4-valve turbo) - Edition 11.2005
1. Servicing injection system 15
