warning AUDI A4 1998 B5 / 1.G Fuel Supply System Front Wheel Drive 1.8T And 2.8 Workshop Manual

20-18

Fuel tank, draining


Vehicles with front wheel drive and 1.8 ltr.
turbo or 2.8 ltr. engine

WARNING!

Fire hazard! Do NOT have anything in the
area that can ignite gasoline!
Observe Safety measures Page 20
-1 .
Observe Rules of cleanliness Page 20
-4 .

Auxiliary equipment required

FM 3000 fuel cart (or equivalent)

CAUTION!

Obtain the radio Anti-theft code from the
customer before disconnecting the Battery
Ground strap.

- Disconnect Battery Ground strap with ignition switched OFF.
- Remove filler cap from fuel filler neck.
- Empty fuel tank as completely as possible through the filler neck.
Pa
ge 13 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-21


WARNING!
Fuel system is under pressure! Before opening, place clean cloths
around the connections to be opened. Carefully loosen the
connections to relieve pressure. - If present, remove the aerodynamic trim panel from the rear axle -
arrows-

- Mark and remove the supply line -1- and return line -2- .
On bottom of vehicle
Pa
ge 16 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-34


If specified value obtained but no running noise audible from pump
WARNING!
Fuel system is under pressure! Before opening, place clean cloths
around the connections to be opened. Carefully loosen the
connections to relieve pressure. - Switch Fluke 83 multimeter to 20 Volt range and connect to terminal 1
(green/yellow) and 4 (brown) of harness connector using jumper wires
from VW 1594 Adaptor kit.
- Press remote control switch continuously while reading Voltage.
Specified value: approx. Battery Voltage.
- Remove cover flange as follows:

- Mark supply line -2- and return line -3- and remove from cover flange.
Pa
ge 30 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-38

Vehicles with 1.8 ltr. turbo engine

WARNING!

Fuel system is under pressure! Before
opening, place clean cloths around the
connections to be opened. Carefully loosen
the connections to relieve pressure.

Vehicles with 2.8 ltr. engine
WARNING!
Fuel system is under pressure! Before opening, place clean cloths
around the connections to be opened. Carefully loosen the
connections to relieve pressure. - Disconnect fuel return hose from connection on fuel distributor line.
- Connect auxiliary hose -arrow- to distributor line and hold in measuring
container.

- Disconnect fuel return hose from hose connection on fuel distributor
line.
- Connect auxiliary hose -arrow- to distributor line and hold in measuring
container.
Pa
ge 34 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-41

- Open fuel-filler cap briefly and close again.

- If necessary, drain fuel tank using fuel cart
Page 20
-18
.

Note:

The fuel tank must not be filled more than
1/3
maximum.

- Remove connector flange cover under luggage
compartment trim.

WARNING!

Fuel system is under pressure! Before
opening, place clean cloths around the
connections to be opened. Carefully loosen
the connections to relieve pressure.

- Mark return line -2- and supply line -3- and pull off of cover flange.
- Unlatch and disconnect 4-pin harness connector -1-.
Pa
ge 37 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2