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 of Mono-Motronic
   - System of injection of Digifant
      Operating procedure
      Malfunctions and independent diagnostics
      Independent repair
      Visual check
      Check of separate elements
      Removal of vpryskny nozzles
      Check of the mode of idling and analysis of exhaust gases
      List of malfunctions
   + System of injection of KE-III-Jetronic
   + 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
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Independent repair

Unfortunately, deep repair at malfunctions of system of injection is impossible because more thorough checks require first of all existence of instrumentations. Special measuring devices and control plugs are necessary for numerous measurements – incidentally not to damage plug contacts. Therefore at a malfunction we recommend the next way of actions:


  1. If the car is not started, check first of all, whether as it should be system of ignition.
  2. Then supply with fuel is checked.
  3. Further a visual inspection of parts of system of injection is carried out.
  4. If thus malfunction was not found, it is necessary to see the list of malfunctions at the end of the head and to check the store of malfunctions in a workshop, to check a suspicious detail according to the specified scheme.

 Help: at an injection system crash at first it is necessary to check safety locks No. No. 13, 21, 25, 27 and 28.