Audi 80/90/Coupe

since 1986-1991 release

Repair and operation of the car



Audi 80/90/Coupe
+ 1.2. Identification of the car
+ 2. Engines, carburetors
3. Lubrication system
+ 4. Cooling system
- 5. Fuel system
   + 5.2. Systems of injection of fuel
   5.2.2. Fuel injectors (20-valvate models)
   + 5.2.3. Electronic control system of the MPI engine
+ 6. Exhaust system
+ 7. System of ignition
+ 8. Transmission
+ 9. Suspension brackets, wheels
+ 10. Brake system
+ 11. Steering
+ 12. Body, salon
+ 13. Air conditioning system
+ 14. Electric equipment



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5. Fuel system

5.1. Fuel system

5.1.1. Components of fuel system

GENERAL INFORMATION

Prevention

Flammablly! You do not smoke and do not bring to the field of repair anything from what can ignite fuel.

Always replace all consolidations and clips.

Always observe purity.


Komponeneta of fuel system (4-and 5-cylinder models)

1. The transferring element of the fuel level sensor
provision of installation
the arrow is directed forward
2. Fuel tank
paste sound-proof slips
to a new tank in the same situation, as well as
on an old tank
3. 25 N. of m.
4. The fixing arm
5. Sealing ring
6. Lock ring
7. The giving fuel-supply line
to the fuel filter
8. The return fuel-supply line from
fuel distributor
9. Connector of the coal filter
10. Perepuskny tube
11. Rubber plug
12. Ring consolidation
13. Lock ring
14. Laying of a jellied mouth
replace if wore out or it is damaged
15. Cover of a fuel-filling mouth
16. Arm
17. Mudguard
18. Drift valve
check:
the valve in vertical position = fuel leaks
the valve is inclined on 45 ° = fuel does not flow
19. Ring consolidation
before installation cover with graphite powder

Komponeneta of fuel system (4-and 5-cylinder models)


1. Store
capacity is 20 cm3
supports residual pressure of 3.4 bars
2. 10 N. of m.
3. 10 N. of m.
4. Fuel filter
provision of installation
the arrow specifies the direction of a stream
fuels
5. 20 N. of m.
6. Arm
7. 20 N. of m.
8. Giving топливодопровод to
to the fuel distributor
9. 20 N. of m.
10. Negative plug
blue wire
11. Locking valve of the fuel pump of 20 N. of m.
12. Positive plug
red wire
13. Fuel pump
14. Arm
15. 10 N. of m.
16. 20 N. of m.
17. 10 N. of m.
18. Arm

Coal filter (4-cylinder models)

1. Tube
to the drift valve
2. To an inlet collector
3. Note: connections are shown disconnected
4. Electrosocket
to the electromagnetic locking valve
5. Electromagnetic locking valve (black)
ignition is included: the valve is open
ignition is switched off: the valve is closed
6. Assembly arm
7. Coal filter
8. Frequency valve of the coal filter (gray)
ignition is included: the valve is closed
ignition is switched off: the valve is open
9. Cover
10. Electrosocket
to the frequency valve of the coal filter

Coal filter (5-cylinder models)

1. To the drift valve
2. Electromagnetic locking valve of the coal filter
3. A cover of the soaked-up air
4. Throttle case

5. Electrosocket
6. Arm
7. Coal filter
8. Cover


Fuel system, arrangement of components for all-wheel drive (4х4) and 20-valvate models
1. The transferring element of the fuel level sensor
removal: disconnect a weight wire from the accumulator
disconnect a cover and a plait of wires from the transferring element
release the bayonet lock of the transferring element, turning it the VAG 2012A tool
provision of installation: the arrow specifies the direction of the movement
2. Ring consolidation
before installation cover with oil
3. Ventilating tube
4. Valve of drift / ventilation
removal: pull the valve up and remove from an arm
check: the valve in vertical position – fuel leaks
the valve is inclined on 45 ° – fuel does not flow
5. Arm
6. Ring consolidation
7. Mudguard
8. Lock ring
9. Consolidation, replace
10. Cover of a fuel-filling mouth
11. Perepuskny tube
12. Rubber plug
13. 25 N. of m.
14. Arm
15. Fuel tank
16. A ventilating tube, to the coal filter
17. The return fuel-supply line, from pressure regulator
18. The giving fuel-supply line, to fuel injectors
19. Dustproof consolidation

Prevention

Flammablly! You do not smoke and do not bring to the field of repair anything from what can ignite fuel.

Always replace consolidations at installation of new parts.

Connections of hoses are fixed by screw or lever clips, always replace lever clips.

Always observe purity.


Fuel system, arrangement of components for all-wheel drive (4х4) and 20-valvate models

1. 10 N. of m.
2. The giving fuel-supply line
to fuel injectors
3. Arm
4. Locking valve of the fuel pump
5. Plug
blue wire, negative
6. Plug
red wire, positive (+)
7. Fuel pump
8. The giving fuel-supply line
from the fuel tank
9. Fuel filter
provision of installation
the arrow specifies the direction of a stream of fuel
10. 20 N. of m.

Fuel system, arrangement of components for all-wheel drive (4х4) and 20-valvate models

1. A connector on an inlet collector
2. Electromagnetic valve of the coal filter
3. To vacuum connection on the fuel pressure regulator
4. Locking valve
5. Coal filter
6. Cover
7. To the valve of drift / ventilation
8. Arm

Fuel system, arrangement of components (Coupet's model)

1. Ventilating tube
2. A tube from foam material
3. Ventilating tube
4. Float-operated valve
5. Valve of regulation of pressure
6. Ring consolidation, replace
before installation cover with oil
7. 5 N. of m.
8. Broad tank
9. A tube from foam material
10. Ventilating tube
11. Lock ring
12. The transferring element of the fuel level sensor
13. Laying, replace
14. Fuel pump
15. Connection of the giving fuel-supply line, 20 N. of m.
16. Fuel tank
17. The directing partition
18. Rubber plug
19. Connection of the giving fuel-supply line, 20 N. of m.
20. Bolt of "banjo", 20 N. of m.
21. Consolidation, replace
22. Fuel filter
provision of installation: the arrow specifies the direction of a stream of fuel
23. A ventilating tube, to the coal filter
24. The return fuel-supply line, from pressure regulator
25. The giving fuel-supply line, to an engine fuel-supply line
26. Bolt of "banjo", 20 N. of m.
27. Consolidation, replace

Fuel pump

1. Consolidation with the aligning ledges
replace
2. Lock-nuts
M6 2.5 Of N of m.
M5 2.0 Of N of m.
3. Electric plugs
M6 weight(s)
M5 positive (+)
4. Screen / filter
turn to the left (the bayonet lock)
5. Fuel pump
replace a rubber ring (for models with a rubber ring in a pump casing flute)
6. Locking valve (20 N. of m)
replace consolidation
7. Screen (top part)
8. Consolidation
replace
9. Banjo connection
establish "banjo" at an angle 180 ° to the drive of forward wheels
10. Noise absorber (15 N. of m)