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
   - System of injection MPI and MPFI
      Additional functions
      Knots of system of injection
      Functioning
      Adjustment by means of a ljambda-probe
      Infringements in work and self-diagnostics
      The self-help
      The visual control
      Check of knots
      Dismantle of separate details
      Cable throttle заслонки
      Inlet collector
      Idling adjustment
      Check of the fulfilled gases
      The help at malfunctions
+ 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



Dismantle of separate details

Many details of system of injection do not require the additional description of dismantle. Exceptions are described in following sections.

Ljambda-probe replacement

 PERFORMANCE ORDER

  1. Disconnect a wire socket, ослабьте a wire collar.
  2. Before installation grease a carving with assembly paste from workshop Audi. On шлицы a probe paste should not get.
  3. The correct moment of an inhaling of a ljambda-probe: 50 Nanometers.

Shtekernye sockets behind at the left in an impellent compartment

1 – a sensor control of a detonation II (dark blue);
2 – heating and a ljambda-probe signal (a probe at the left; black);
3 – ignition coils (a bringing wire; white);

4 – the gauge of the moment of ignition (black);
5 – the gauge of number of turns of the engine (grey).

Shtekernye sockets behind on the right in an impellent compartment

1 – heating and a ljambda-probe signal (a probe on the right; black);

2 – a sensor control of a detonation I (dark blue).

Dismantle of a measuring instrument of weight of air

 PERFORMANCE ORDER

  1. Loosen the a collar воздухозаборного a hose.
  2. Disconnect a socket of a measuring instrument of weight of air.
  3. Dismantle the top part of the case of the air filter with a measuring instrument of weight of air how it is described in the head the Air filter and channels всасывания.

Dismantle of valves of injection

Injection valves (white arrows) can be dismantled only together with a distributive tube of fuel. For this purpose ослабьте fixing bolts of a distributive tube (black arrows).


 PERFORMANCE ORDER

  1. Dismantle soaking up hose between the air filter (a measuring instrument of weight of air) and the engine.
  2. Disconnect and put aside high voltage wires.
  3. Disconnect sockets of valves of injection.
  4. Unscrew a distributive tube of fuel from an inlet collector on the engine.
  5. Disconnect a vacuum hose from a regulator of pressure of fuel.
  6. Remove upwards a distributive tube of fuel with valves of injection from an inlet collector on the engine.
  7. To dismantle the separate valve of injection, remove fixing скобу from a distributive tube and take out the valve.
  8. Installation: before installation replace rubber rings of round section on all valves of injection.
  9. Grease all rubber rings of round section with new engine oil.
  10. Very cautiously and on one insert injection valves so that any of rubber rings of round section has not been squeezed or damaged.