Audi 80/90/Coupe

since 1986-1991 of release

Repair and car operation

Audi 80/90/Coupe
+ 1.2. Car identification
- 2. Engines, carburetors
   2.1.2. Removal and engine installation (5-cylinder models)
   2.1.3. Dismantling and assembly of engines
   2.1.4. Head of the block of cylinders, gazoraspredeleniye mechanism
   + 2.2. Engine electric equipment
   - 2.3. Carburetors
      + Check and carburetor adjustment
      + 2.3.2. Keihin carburetors
3. Greasing system
+ 4. Cooling system
+ 5. Fuel system
+ 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


2.3. Carburetors

2.3.1. Ecotronic carburetor (Pierburg 2EE) General description


The ITS carburetor 2 with working components

1. Safety locks
2. Gas rope
3. Bolt, 10 N of m.
4. ITS carburetor 2
5. Bolt, 13 N of m.
6. Fixing laying under the carburetor
7. Temperature sensor, 20 N of m.
8. The vacuum union for the hydraulic booster of brakes
9. The pipeline for cooling liquid
10. Collector laying
11. Laying
12. Bolt, 25 N of m.

13. A soaking-up collector
14. Bolt, 20 N of m.
15. The about-shaped
16. A heater of a bringing collector
17. Bolt, 10 N of m.
18. The equipment for management of the carburetor
19. Connecting plug
20. A plug for probe connection the Lambda
21. Probe Lambda, 50 N of m.

Top part of the ITS carburetor 2
1. Ventilating tube of the poplavkovy
2. Ventilating strainer of the exhaust silencer
flame (The poplavkovy chamber)
3. An enrichment tube at full loading
4. Bolt, 5 N of m.
5. Zaslonka of start-up
6. Carburetor cover
7. Needle
8. Laying, is subject to obligatory replacement
9. Preliminary spray, 1 chamber
10. Preliminary spray, 2nd chamber
11. Safety wedge
12. Fuel jet of idling
13. Main jet, 1 chamber
14. Main jet, 2nd chamber
15. Stopper
16. Arm
17. Regulator of installation of a diaphragm
18. Fixing ring
19. Needle valve of a float
20. Float axis
21. Float
22. Float laying

Lower part of the ITS carburetor 2
1. Cap stopper
2. The about-shaped
3. Filter
4. Butterfly valve regulator
5. Ventilating valve
6. Valve of removal of air
7. Holder of a regulator of a butterfly valve of a rope of gas
8. Return valve
9. Valve plate
10. A directing element
11. Valve spring
12. Lower part of the carburetor
13. Heater of the valve of average loading
14. Persistent screw of a butterfly valve, chamber 1
15. The adjustment screw WITH
16. Vacuum regulator of ignition,
chamber 2
17. Lever of blocking of a butterfly valve, chamber 2
18. Connecting plug
19. Butterfly valve potentiometer

The ITS carburetor 2 in the disassembled condition


Type – 2-IT, 1.6 liters applied in engines with PP designation

Chamber 1П
Chamber 2
Diameter of a diffuzor
Main jet
X 105
X 110
Jet air
X 110
X 105
Fuel jet of idling
X 45
Suited mix enrichments at full loading
0.4 mm
The increased speed of idling of the cold engine
1400 rpm
Speed of rotation of idling
750 rpm
Maintenance of an oxide of carbon
0.6 %

2-ITS carburetor is the carburetor of the overturned type, two-step with electronic adjustment. This carburetor has no traditional auxiliary systems of the main fuel system, for example, the equipment of work of start-up or the accelerating pump. Functions of these systems carry out two regulators: regulator of provision of a zaslonka and regulator of installation of a throttle. Regulators receive electric impulses from a microprocessor control system which is placed behind the hiding place case.

The probe a lambda is in the forward exhaust silencer of system of an exhaust. It carries out measurement of the maintenance of an oxide of carbon in exhaust gases and sends the corresponding signal (tension) to a control system. Thanks to it the equipment of management changes a ratio of fuel and the air, soaked up in the carburetor, and thus оптимализирует burning conditions.