Audi 80/Avant (B4)

Since 1991-1995 of release

Repair and car operation

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


Removal of elements

Vprysknye atomizers (white arrows) can be removed only together with the fuel distributor. For this purpose it is necessary to weaken fixing bolts of the distributor of fuel (black arrows).

Removal of a flowmeter of air

It is not necessary for many components of system of injection of any additional instructions on dismantle. Exceptions are described in following sections.


    To weaken a collar of a sleeve of a flowmeter of air. To remove the tip of a flowmeter of air. To remove the top part of the air filter together with air flowmeter as it is described in the head the Air filter and inlet channels.

Removal of atomizers


    To remove an air inlet sleeve between the air filter (air flowmeter) and the engine. To separate and put aside high-voltage wires of system of ignition. To separate tips of atomizers. To turn off the distributor of fuel from an inlet collector of the engine. To disconnect a vacuum hose from a regulator of pressure of giving of fuel. The distributor of fuel with all six atomizers cautiously to disconnect in a direction upwards from an inlet collector of the engine. For removal of one separate atomizer to remove from the fuel distributor safety скобу and to separate an atomizer. Installation: before installation to replace sealing rings of round section on all atomizers. To grease all sealing rings with new engine oil. Very cautiously to insert each atomizer separately, not to squeeze or to damage otherwise any of rings.