Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car



Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
- System of injection
   + System of injection Mono-Motronic
   + System of injection Digifant
   - System of injection KE-III-Jetronic
      Basic elements
      Operating procedure
      Lambda regulation
      Malfunctions and independent diagnostics
      Independent repair
      Visual check
      Check of separate elements
      Search of malfunctions
      Removal of components
      Check of the mode of idling and analysis of exhaust gases
      List of malfunctions
   + Systems of injection of MPI and MPFI
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signaling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications





List of malfunctions

KE-III-Jetronic

Malfunction
Its reason
Than to help
A. The cold engine is not started 1. The regulator of pressure does not regulate pressure to a filling opening of a plunger or does it incorrectly
2. Faulty distributive valve of stabilization of idling
3. The starting valve does not inject fuel
4. The starting valve is untight, defective laying
5. The locking valve is incorrectly installed
6. The heavy course of the locking valve or the operating zolotnik
7. Unaccounted air comes to the engine
To check the regulator of pressure and the control unit in a workshop

To check

To check the starting valve
To check tightness

To check installation
To check
To check all pipelines and flange connections

B. The heated-up engine is not started 1. See. And 1, 5 and 6
2. Leakage of nozzles, too low pressure of the beginning of opening
3. Too low pressure in system
4. Too rich gas mixture in the idling mode
5. Too poor gas mixture in the idling mode
To check (in a workshop)
To measure in a workshop
To adjust in a workshop contents WITH
To adjust in a workshop contents WITH
C. The cold engine shivers in the idling mode 1. See. And 1, 2, 4, 5 and 7
2. See. In 2
 
D. The cold engine works in the dispersal mode with interruptions 1. See A3
2. Faulty sensor of angular movement of a butterfly valve
To check
E. The heated-up engine shivers in the idling mode 1. See. And 1, 2, 6 and 7
2. See. In 4 and 5
 
F. Backfires in a final collector 1. See. And 1
2. See. In 5
 
G. Flashes in a final collector 1. See. And 1 and 4
2. See. In 4
3. The fuel pump does not work
See the head "Fuel tank and the fuel pump"
H. The engine works with interruptions, becomes deaf 1. The fuel pump works unevenly
2. Fuel pressure in system does not meet standard
To measure the given amount of fuel in a workshop
To measure and adjust in a workshop
I. Insufficient engine capacity 1. See. And 1, 4, 6 and 7
2. See. In 4 and 5
3. Insufficient productivity of the fuel pump
4. Butterfly valves do not rise in the provision of full "gas"
To measure the given amount of fuel in a workshop
To adjust the hummock drive of "gas" or to check connection with butterfly valves
J. The engine continues to work after switching off of ignition 1. See. And 4, 5 and 6
2. See. In 2
 
K. Too high fuel consumption 1. See. And 1 and 4
2. See. In 4
 
L. The heated-up engine works in the idling mode on too high turns See. And 2  







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