warning AUDI A4 2000 B5 / 1.G Fuel Supply System Biturbo 2.8 Workshop Manual

20-107


Fuel supply system, servicing
(vehicles with 2.7 ltr. turbo
engine) WARNING!
Always comply with all applicable safety
precautions when working on the fuel system
Note:

Always replace gaskets, seals and hose clamps
when working on the fuel system.
Hose connections are secured either with
screw-type or spring-type clamps. Always
replace clamps with factory clamps, see Parts
catalogue.
1 -
Sender for fuel gauge -G
Ball-shaped floatCheck resistance Page 20
-125
Removing and installing Page 20
-128
Pa
ge 1 of 25 Fuel su
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ly system, servicin
g (vehicles with 2.7 ltr. turbo en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
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20-114
If specified value was obtained even so you
could not hear the fuel pump run, remove the fuel
pump flange as follows:

WARNING!

Fire hazard! Remove everything from the area
that could ignite fuel or fuel vapor. fuel
system is under pressure. Cover connection
with rag and carefully release pressure by
slowly opening the connection.

- Mark fuel return line -2- and fuel supply line -3- and remove from fuel
pump flange.

- Remove threaded cap nut with wrench 3217.
- Lift flange and seal from tank opening.
Pa
ge 8 of 25 Fuel su
pp
ly system, servicin
g (vehicles with 2.7 ltr. turbo 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.GE04.20.4

20-117

- Connect alligator clip to battery (+) .

- Remove fuel filler cap

- Remove engine cover

WARNING!

Fire hazard! Remove everything from the area
that could ignite fuel or fuel vapor. fuel
system is under pressure. Cover connection
with rag and carefully release pressure by
slowly opening the connection.

- Disconnect fuel return line from line connection at fuel distributor.
- Connect test hose -arrow- at fuel distributor line and place other hose
end into measuring cup.
- Operate remote switch for 15 seconds (press button continuously).

*) Volume of fuel delivered in cm
3/15 s - Compare collected fuel with specified value.
Pa
ge 11 of 25 Fuel su
pp
ly system, servicin
g (vehicles with 2.7 ltr. turbo en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.GE04.20.4

20-119

Removing

- Obtain radio code for radio with anti-theft
coding.

- Switch off ignition and disconnect battery ground
(GND) cable.

- Briefly open fuel filler cap and then close it
again.

- Empty fuel tank if necessary using fuel
evacuator unit VAG1433 A.


Front wheel drive Page 20
-18
.


All wheel drive Page 20
-66
.

Note:

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

- Remove luggage compartment liner.

- Remove cover for fuel pump flange.

WARNING!
Pa
ge 14 of 25 Fuel su
pp
ly system, servicin
g (vehicles with 2.7 ltr. turbo 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.GE04.20.4