fuel pressure AUDI A4 1997 B5 / 1.G Quattro Fuel Syst
[x] Cancel search | Manufacturer: AUDI, Model Year: 1997, Model line: A4, Model: AUDI A4 1997 B5 / 1.GPages: 55, PDF Size: 0.88 MB
Page 10 of 55
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
Page 16 of 55
20-68
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-, supply line -3- and remove cover flange.
- Unlatch and disconnect 4-pin harness connector -1-.
- Unscrew union nut using 3217 wrench.
- Remove cover flange and sealing ring from fuel tank opening.
- Pump remaining fuel through the flange opening.
Pa
ge 16 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
Page 21 of 55
20-72
WARNING!
Fuel system is under pressure! Before
opening, place clean cloths around the
connections to be opened. Carefully loosen
the connections to relieve pressure.
- From bottom of vehicle, mark supply line -1-, return line -3- and bleed
line to EVAP canister and disconnect -2-.
- Remove the EVAP canister cover near bottom of spare wheel well
Page 20
-130
.
- Loosen hose connections -1- and -2- on bleed lines.
- Unclip line from bracket -arrow-.
- Place VAG1383A engine and transmission jack under the fuel tank for
support.
- Mark installed position of the clamp bands.
Pa
ge 21 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
Page 30 of 55
20-81
Repair Manual, Fuel Injection & Ignition, Repair
Group 24 14 -
Fuel supply unit
Removing and installing Page 20
-91
- Fuel pump electrical checks Page 20
-
82
- Residual pressure, checking:15 -
Fuel strainer
Connected to fuel supply unitCan not be replaced individually
- Clean if dirty
16 -
Surge housing lower section Installed in fuel tankCan not be removed
Pa
ge 30 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
Page 34 of 55
20-85
If specified value obtained but no audible sound 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
- Connect multimeter between terminals 1 (green/yellow) and 4 (brown)
of harness connector using jumper wires from VW 1594 adaptor kit.
- Press remote control switch continuously and read Voltage.
Specification: approx. Battery Voltage.
- Remove cover flange as follows
- Mark return line -2- and supply line -3- and remove from cover flange.
Pa
ge 34 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
Page 38 of 55
20-89
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 1.8 ltr. turbo engine
Vehicles with 2.8 ltr. engine - Disconnect fuel return hose from connection on fuel distributor line.
- Connect auxiliary hose -arrow- to distributor line and place in a
measuring container.
- Disconnect fuel return hose from the hose connection on the fuel
distributor line.
- Connect auxiliary hose -arrow- to distributor line and place in a
measuring container.
Pa
ge 38 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
Page 42 of 55
20-93
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 disconnect from cover
flange.
- Unlatch and disconnect 4-pin harness connector -1-.
- Unscrew union nut using 3217 wrench .
- Remove cover flange and sealing ring from fuel tank opening.
- Disconnect fuel level display harness connector on inside of flange
cover.
- Disconnect return line on inside of cover flange (press unlatching
buttons).
Pa
ge 42 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