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
      Basic elements
      Operating procedure
      Malfunctions and independent diagnostics
      Independent repair
      Visual check
      Check of separate elements
      Search of malfunctions
      Removal of components
      Check of a mode of idling and the analysis of exhaust gases
      The list of malfunctions
   + Systems of injection MPI and MPFI
+ 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 components

Removal впрыскных atomizers

It is not necessary for many components of system of injection of any additional descriptions on dismantle. There, where explanations are necessary, you will read them in following sections.


    To remove the top part of an inlet collector. To turn off fixture впрыскных atomizers. Flat-nose pliers to extend an atomizer together with a nozzle. Топливопровод remains connected that the dirt has not got to an atomizer. At installation it is necessary to moisten with gasoline rubber sealing rings of an atomizer, and also loose leaves to achieve easy installation on a sealing surface. If the atomizer is put on насухую, there is a danger that the rubber ring will be flattened and there will be no appropriate consolidation. It will be expressed in failures in behaviour of the engine because of hit of not considered air, for example in rough work in an idling mode. It is necessary to replace the damaged or cracked sealing rings necessarily. To tighten bolts of fastening of atomizers the moment 10 Н•м.

Removal of a sleeve of an air inlet

The thick sleeve between the proof-reader of structure of a gas mixture and the case of throttle knot is necessary for removing, at least partially, during various works on repair of system of injection:


    To weaken collars on the proof-reader of structure of a gas mixture and the case of throttle knot. To weaken collars of other hoses of an air line on an air inlet sleeve. From them it is possible to name: a hose to the operating valve of stabilisation of frequency of rotation of a shaft of the engine in an idling mode, to the air channel впрыскных atomizers, etc. To remove air line hoses. To remove the valve of system of evaporation of fuel. To remove an air inlet sleeve. At installation to insert a grid over the proof-reader of structure of a gas mixture camber upwards. To Pay attention to a mark oben (top).

Removal of the top part of an inlet collector

At the left: removal of a sleeve of an air inlet. Arrows specify in details which should be removed or turned off.

On the right: тросовый the drive of "gas" (3) is fixed on the lever throttle заслонки (5) by means of two fixing скоб (1 and 2). Regulation тросового a gas drive is made by means of the adjusting plug of a tip of a cable (4).


    To remove an air inlet sleeve. To disconnect a cable of a drive of "gas" and to take out it from a countersupport. To remove the tip of the gauge of angular moving throttle заслонки. To remove air line hoses. To weaken internal фланцевые fixing bolts and to remove an inlet collector. At installation it is obligatory to use new фланцевые sealing linings. To tighten фланцевые fixing bolts in two calling to final size 20 Н•м.