Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation

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
- Injection system
   + 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 a 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 electrosystem
+ ignition System
+ 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 for more thorough checks existence of instrumentations is necessary first of all. Special measuring devices and control tips are necessary for numerous measurements – casually not to damage plug contacts. Therefore at a malfunction we recommend the next way of actions:


  1. If the car is not got, check first of all, whether as it should be ignition system.
  2. Then supply by fuel is checked.
  3. Further visual check 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 head and to check in a workshop the store of malfunctions, to check a suspicious detail according to the specified scheme.

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