Audi 80/90/Coupe

since 1986-1991 of release

Repair and car operation



Audi 80/90/Coupe
+ 1.2. Car identification
+ 2. Engines, carburetors
3. Greasing system
+ 4. Cooling system
- 5. Fuel system
   - 5.2. Systems of injection of fuel
      5.2.1.2. Specifications (4-cylinder models)
      5.2.1.3. Components of system of injection for 5-cylinder models
      5.2.1.4. Specifications (5-cylinder models)
      5.2.1.5. Starting position of a plate of the sensor of an air stream
      5.2.1.6. Free wheeling of a plate of the sensor of an air stream
      5.2.1.7. Lever of a plate of the sensor of an air stream
      5.2.1.8. An operating plunzher
      5.2.1.9. Throttle valve
      5.2.1.10. Rope of management of a butterfly valve
   5.2.2. Fuel injectors (20-klapanny models)
   + 5.2.3. Electronic control system of the MPI engine
+ 6. Exhaust system
+ 7. Ignition system
+ 8. Transmission
+ 9. Suspension brackets, wheels
+ 10. Brake system
+ 11. Steering
+ 12. Body, salon
+ 13. Central air
+ 14. Electric equipment







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5.2. Systems of injection of fuel

5.2.1. The combined system of a toplivosnabzheniye and CIS-E Motronic ignition

5.2.1.1. Components of system of injection for 4-cylinder models

GENERAL INFORMATION

CIS = Continuous Injection System = system of continuous injection

Components of system of injection (4-cylinder models)
1. Switch of a mode of idling
2. The start valve from a cold condition
3. Pressure regulator
4. Fuel distributor
5. The socket for car self-diagnostics
6. Regulator of pressure of fuel
7. Potentiometer
8. A tube for measurement WITH
9. Valves of injection of fuel
10. Spark plugs
11. Sensor of detonation combustion of fuel
12. Temperature sensor
13. Coal filter
14. A sealing cap on the coal filter
15. The frequency valve for the coal filter – the valve I
16. Panel of fuses
17. Electrosocket of the oxygen sensor
18. The ignition distributor (with the Hall sensor)
19. Electrosocket of the sensor of detonation combustion of fuel
20. The electromagnetic locking valve for the coal filter – the valve II
21. Ignition coil
22. Target cascade
23. Valve of stabilization of idling
24. Switch of a mode of completely open butterfly valve
25. CIS-E Motronic control unit
between the right top dashboard and the ventilating channel (car salon)

Components of system of injection (4-cylinder models)
1. A cover of soaked-up air
2. Throttle case
3. To an inlet collector
4. Switch of a mode of completely open butterfly valve
5. Switch of a mode of idling
6. To a head of cylinders
7. Troynikovoye connection
8. Inlet collector
9. Laying
10. To the hydraulic booster of brake system
11. To a ventilating hose of a case
12. A bulb of the indicator of malfunctions (in a dashboard insert)
13. The electrosocket for the oxygen sensor
14. The electrosocket for a heater of the oxygen sensor
15. Oxygen sensor (thermal type),
50 N of m.
arrangement: catalytic converter
16. Control unit electrosocket
disconnect or connect the electrosocket only at the switched-off ignition
17. CIS-E Motronic control unit (the alarm block)
removal: remove furnish ahead of "glove compartment"
press fixing shponka into the dashboard and remove the control unit from below
18. To the solenoid of the coal filter
19. Electrosocket of the stabilizer of idling
20. Rubber block of fastening
21. Valve of stabilization of idling

Components of system of injection (4-cylinder models)

1. Submitting топливопровод (from the fuel filter)
2. Return топливопровод (to the fuel tank)
3. Fuel distributor
after installation of the distributor of fuel check a free wheeling of a plate of the sensor of an air stream, if necessary adjust
4. 3.5 N of m, after an inhaling fix paint
5. A stopper with a six-sided head, 10 N of m.
connection for pressure check
6. 20 N of m.
7. A ventilating hose (to the top part
air filter)
8. Regulator of pressure of fuel
9. 10 N of m.
10. 3.5 N of m.
11. An operating plunzher
12. Sealing ring
smaller diameter – to an operating plunzher, pressurizes only in a starting position of a plate of the sensor of an air stream
13. The lock screw of an operating plunzher
14. Ring consolidation, replace
15. 20 N of m, at replacement establish a "banjo" bolt instead of the minifilter
16. Pressure difference regulator
17. Anti-magnetic screw
18. Electrosocket of a regulator of pressure difference
19. The electrosocket of the sensor of temperature of cooling liquid
20. The sensor of temperature of cooling liquid
21. A ledge for hose connection
22. 20 N of m.
23. To valves of injection of fuel
24. To the start valve from a cold condition
25. 10 N of m.

Components of system of injection (4-cylinder models)

1. A cover of soaked-up air
2. Sensor of an air stream
3. Potentiometer
4. Casing of the air filter (the top part)
5. A filtering element of the air filter
6. Connecting flange
7. The Pritochny air valve, with operating zaslonka and the thermostat
the operating zaslonka closes:
above +10 ° With: inflow of warm air
below 0 ° With: inflow of cold air
8. A hose (to an exhaust cranked branch pipe)
9. Casing of the air filter (lower part)
10. Laying
11. A cap, удадите before contents adjustment WITH
12. Mesh filter
provision of installation: curvature to a cover
13. 10 N of m.
14. An arm for fuel injectors
15. To the fuel distributor
16. Injector valve
17. Lock ring
18. М6 = 10 N of m.
М8 = 25 N of m.
19. Inlet collector
20. The temperature sensor (for the fan of cooling of injector valves / топливопроводов)
21. Insert of a fuel injector
22. Laying of an inlet collector
23. Ring consolidation, cover with greasing before installation
24. 20 N of m.
25. The start valve from a cold condition
26. The electrosocket of the valve of start from a cold condition


Prevention

Inflammably! Do not smoke and do not bring to area of repair anything from this that can ignite fuel.

Replace laying and ring consolidations.

Fix connections of hoses by screw or spring clips.

For the correct work of components of electric system tension of at least 11.5 volts is necessary.

Be attentive at work with the engine. The high voltage can injure you and damage electric components.


Switch off ignition:

 – at connection or a detachment of testers to ignition system;
 – at connection or a detachment of wires of ignition;
 – at a wash of the engine.

Do not forget about the accumulator:

 – do not disconnect the accumulator at the working engine;
 – at emergency start use the podzaryadny device no more than 15 seconds and tension no more than 16.5 volts;
 – disconnect the accumulator and the CIS-Motronic control unit when using the equipment of arc, spot or electric welding.

When testing system:

 – do not submit tension on the control unit for modeling of target signals;
 – at a wire detachment coils (plug 4) from the distributor always earth by means of a wire piece;
 – at the disconnected and not earthed wire of a high voltage do not turn the engine.

When using heat:

 – if components were heated up above 80 ° With the dryer for paint or a paroochistitel, wait while they will cool down before engine start.

At towage:

 – in cars with faulty ignition (or with possible malfunctions of ignition) it is necessary to disconnect the target cascade of the coil of ignition.

Rules of observance of purity

First of all clear points of connections before separation.

 At open fuel system:

 – do not use the compressed air needlessly;
 – move the car only at an urgent need;
 – if you did not finish repair, accurately cover details with a film or paper, but not rags.

Use only pure details:

 – do not develop new components ahead of time;
 – use only the packed new details;
 – put the removed details on a pure surface, cover with a plastic foil or paper, but not rags.