Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
- Injection system
   + System of injection of Motronic
   - System of injection of MPI and MPFI
      Additional functions
      Knots of system of injection
      Adjustment with the help a lambda probe
      Violations in work and self-diagnostics
      Visual control
      Check of knots
      Dismantle of separate details
      Butterfly valve cable
      Inlet collector
      Idling adjustment
      Check of exhaust gases
      The help at malfunctions
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ 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 need the additional description of dismantle. Exceptions are described in the following sections.

Replacement lambda probe


    Disconnect the wire socket, weaken a wire collar. Before installation grease a carving with assembly paste from Audi workshop. On a shlitsa of a probe paste should not get. Correct moment of an inhaling lambda probe: 50 Nanometers.

Shtekernye sockets behind at the left in an impellent compartment

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

4–moment sensor ignitions (black);
5–sensor of number of turns of the engine (gray).

Shtekernye sockets behind on the right in an impellent compartment

1–heating and signal lambda probe (probe on the right; black);

2–detonation sensor I (dark blue).

Dismantle of a measuring instrument of weight of air


    Weaken a collar of an airintaking hose. Disconnect the socket of a measuring instrument of weight of air. Dismantle the top part of the case of the air filter with a measuring instrument of weight of air how it is described in head the Air filter and absorption channels.

Dismantle of valves of injection

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


    Dismantle soaking-up hose between the air filter (a measuring instrument of weight of air) and the engine. Disconnect and put aside wires of a high voltage. Disconnect sockets of valves of injection. Unscrew a distributive tube of fuel from an inlet collector on the engine. Disconnect a vacuum hose from a regulator of pressure of fuel. Remove up a distributive tube of fuel with injection valves from an inlet collector on the engine. To dismantle the separate valve of injection, remove fixing bracket from a distributive tube and take out the valve. Installation: before installation replace rubber rings of round section on all valves of injection. Grease all rubber rings of round section with new engine oil. Very carefully and on one insert injection valves so that any of rubber rings of round section was not squeezed or damaged.