ECU AUDI A4 1998 B5 / 1.G Quattro Fuel Syst

20-53


Fuel supply system, servicing
(vehicles with all wheel drive
and 1.8 ltr. turbo or 2.8 ltr.
engine) Fuel tank assembly, component overview

Note:
Repair Manual, Fuel Injection & Ignition, Repair
Group 24
Checking fuel pump relay and triggering: Secure all hose connections using spring
clamps.
VAG1921 pliers are recommended for installing
spring clamps
Always replace sealing rings and gaskets during
installation work.
Always refer to the Parts Catalog for availability
of individual items in an assembly.
Pa
ge 1 of 55 Fuel su
pp
ly system, servicin
g (vehicles with all wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.3

20-62


Fuel filler neck, component overview
(vehicles with ORVR)

Vehicles with all wheel drive and 1.8 ltr. turbo or
2.8 ltr. engine
1 -
Expansion tank
- Secure wires to expansion tank using
adhesive tape
2 -
Bleed lines
To connector line at top of fuel tank
3 -
Tank protection valve Clipped to fuel filler neckVentilates fuel tank for pressure
compensation
4 -
Gravity valve To remove valve, unclip upward out of the
filler neck
- Check valve for flow:
Valve vertical: Flow

Valve tilted 45 : No Flow
5 -
O-ring
-Replace
Pa
ge 10 of 55 Fuel su
pp
ly system, servicin
g (vehicles with all wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.3

20-74

Installing
Installation is performed in the reverse order of
removal, during installation note the following:

CAUTION!

Always refer to the latest parts catalog to
ensure that you use original equipment fuel
hose clamps.

Note:

Secure all hose connections using spring
clamps:
VAG1921 Hose clamp pliers are recommended
for installing spring clamps.
Always replace sealing rings and gaskets
during installation work.

- Ensure that Ground connection -arrow- connects to metal ring on filler
neck.
Check Ground wire routing.
Pa
ge 23 of 55 Fuel su
pp
ly system, servicin
g (vehicles with all wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.3

20-75

- Loosely fasten clamp bands and carrier plate to
fuel tank.

- Position fuel tank on floor pan complete with
clamp bands and carrier plate using VAG1383 A
engine transmission jack.

CAUTION!
Ensure that Ground connection is surrounded with a protective
shield and connector on fuel filler neck is securely attached.
Installed position Fig. 1
, Page 20
-58
. - Before threading in mounting screw -1- ensure tight fit (chamfer) of
screw eye -2- on protective plate Ground connection -3- for fuel filler
neck.

- Screw the clamp bands and carrier plate tight -arrows-.
- Tighten plastic nuts on clamp bands and carrier plate.
Pa
ge 24 of 55 Fuel su
pp
ly system, servicin
g (vehicles with all wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.3