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
   + System of injection of KE-III-Jetronic
   - Systems of injection of MPI and MPFI
      Operating procedure
      Lambda regulation
      Malfunctions and independent diagnostics
      Independent repair
      Visual check
      Check of separate elements
      Removal of elements
      Hummock drive of "gas"
      Check of a mode of idling and analysis of exhaust gases
      List of malfunctions
+ 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

Removal of elements

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

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 the following sections.


  1. To weaken a collar of a sleeve of a flowmeter of air.
  2. To remove the tip of a flowmeter of air.
  3. To remove the top part of the air filter together with an air flowmeter as it is described in head «The air filter and inlet channels».

Removal of nozzles


  1. To remove an air inlet sleeve between the air filter (an air flowmeter) and the engine.
  2. To separate and put aside high-voltage wires of system of ignition.
  3. To separate tips of nozzles.
  4. To turn off the fuel distributor from an inlet collector of the engine.
  5. To disconnect a vacuum hose from a regulator of pressure of supply of fuel.
  6. The fuel distributor with all six nozzles carefully to disconnect in the direction up from an inlet collector of the engine.
  7. For removal of one separate nozzle to remove from the fuel distributor a safety bracket and to separate a nozzle.
  8. Installation: before installation to replace sealing rings of round section on all nozzles.
  9. To grease all sealing rings with new engine oil.
  10. Very carefully to insert each nozzle separately, not to squeeze or to damage otherwise any of rings.