Audi A4

Since 1994 of release

Repair and car operation

Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
- Injection system
   - System of injection Motronic
      The major knots
      So the system of injection Motronic functions
      Infringements in work and self-diagnostics
      The self-help at injection
      The visual control
      Search of malfunctions in separate knots
      Check of idling and the fulfilled gases
      Check of the fulfilled gases (AU)
      Cable throttle заслонки
      The help at malfunctions
   + System of injection MPI and MPFI
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics

The visual control

  • Whether not tight sites on gasoline pipe lines are appreciable?
  • You disconnected and then connected some times sockets of wires? Corrosion or the nonprofessional reference can damage contacts.
  • Attentively examine sockets of separate knots of system of injection. Do not bend contacts, only process their spray for contacts.
  • At infringements in engine work in an idling range check up, whether soaks up the engine additional air.

Search of a place of receipt of "additional air

Not tight sites of system всасывания air pass so-called additional air, i.e. Air which does not enter into calculation of the block of management and consequently aloud breaks process of preparation of the toplivno-worker of a mix. In a working mix неконтролируемо the quantity of fuel decreases. Idling this infringement is the most appreciable by fluctuation of number of turns.


  1. Check up on presence of cracks vacuum hoses and durability of their fastening. Check up all hoses connected to an inlet collector (for example, from the brake amplifier, from a regulator of pressure of fuel, the electromagnetic valve of system, system of gathering/return of steams of fuel).
  2. Warm up the engine, then, having left it to idle, open a cowl.
  3. Water from a spray of starting fuel (for example, Startpilot) a branch pipe throttle заслонки, linings of flanges, inlet channels and pipelines to the units operated means of lowered pressure. For this purpose disconnect a ljambda-probe socket.
  4. If at сбрызгивании a certain place the number of turns not tight site is found out changes.