Audi 80/Avant (B4)

Audi 80/Avant
The description
System of release of the fulfilled gases
Cooling system
Fuel tank and the fuel pump
The air filter and intake channels
- Injection system
   - System of injection Mono-Motronic
      Operating procedure
      Malfunctions and independent diagnostics
      Independent repair
      Visual check
      Check of separate elements
      Check of a mode of idling and the analysis of exhaust gases
      Check catalytic neutralizer and a ljambda-probe
      Trosovyj drive of "gas"
      The list of malfunctions
    System of injection Digifant
    System of injection KE-III-Jetronic
    Systems of injection MPI and MPFI
Transmission and transmission
Suspension bracket and steering
Brake system
Antiblocking system of brakes
Wheels and tyres
body electrosystem
Ignition system
Signalling devices
Devices and auxiliary devices
Heating and ventilation
Body elements
Search of malfunctions

Independent repair

Kind of the block of preparation of a gas mixture of system of injection Mono-Motronic at the removed air filter

1 – a pressure regulator;
2 – the connecting tip for an atomizer and the gauge of temperature of arriving air;
3 – the connecting tip of a potentiometer throttle заслонки;

4 – an atomizer;
5 – the gauge of temperature of arriving air.

Many checks of system of injection, unfortunately, cannot be spent in-home because of absence of devices necessary for check. But nevertheless there is a certain field for activity.

The block of management cannot be checked up "house" means. But from practice it is known that malfunctions here arise very seldom.

Is much more often give an occasion to claims gauges, switches and cable connections. Therefore at the found out malfunctions the following operations procedure is recommended:


  1. To establish that ignition is perfectly in order.
  2. To check up supply by fuel.
  3. To spend visual check of elements of system of injection.
  4. If thus malfunction has not been found, to see the list of malfunctions in the end of the head and to check up in a workshop the store of malfunctions, to check up a suspected detail under the specified scheme.

 The help: at an injection system crash at first check up safety locks № 13, 21, 25, 27 and 28. Through them passes all food of system of injection Mono-Motronic.