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1.7 Exploded view - intake manifold
1 - Screw for intake air temper‐
ature sender 2 -G299-
❑ 5 Nm
2 - Intake air temperature
sender 2 -G299-
3 - Intake manifold
❑ Removing and installing
→ Chapter (page 18
)
4 - Solenoid valve 1 for activat‐
ed charcoal filter -N80-
5 - Bolt for single-plunger high-
pressure pump
❑ 3 x
❑ 10 Nm
6 - Fuel pressure regulating
valve -N276-
7 - 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) sup‐
plies fuel to the mechan‐
ical 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 en‐
ters the fuel system.
❑ The fuel system must not be under pressure; procedure for reducing fuel pressure → Chapter (page 3)
❑ Fuel pipes must be free of tension when installed.
❑ Removing and installing → Chapter (page 32)
8 - Connection for fuel return pipe to fuel tank
❑ Renew bolt for fuel return pipe.
❑ Tighten connecting piece to 40 Nm (always make sure that connecting piece is tightened to specified
torque before installing fuel line)
❑ Fuel line must be free of tension when installed (make sure all parts are clean); tightening torque: 25 Nm
9 - Fuel supply line to fuel rail
❑ Tighten connecting piece to 30 Nm (always make sure that connecting piece is tightened to specified
torque before installing fuel line)
❑ Fuel line must be free of tension when installed (make sure all parts are clean); tightening torque: 30 Nm
10 - Intake manifold flap motor -V157- with intake manifold flap potentiometer -G336-
❑ After the fuel rail has been renewed, intake manifold flap potentiometer -G336- must be re-adapted to
the engine control unit → Vehicle diagnosis, testing and information system VAS 5051; “Guided Function”
11 - Bolt for intake manifold flap motor -V157- with intake manifold flap potentiometer -G336-
❑ 3 x
Audi A3 2004 ➤
Direct petrol injection and ignition system (4-cyl. 2.0 ltr. 4-valve turbo) - Edition 11.2005
1. Servicing injection system 13
