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
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
- Ignition system
   That provides ignition
   When there is an ignition of a fuel and air mix?
   Different systems of ignition
   So there is an ignition spark
   Executive body
   System brain
   The signals arriving in the control unit
   Detonation adjustment
   Be careful in the address with ignition
   Works on ignition system
   Search of malfunctions in ignition
   Ignition distributor
   Knot of a high voltage
   Replacement of spark plugs
   Right choice of spark plugs
   Check of the moment of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

Knot of a high voltage

The wire of a high voltage, the antinoise socket belong to knot of a high voltage of system of ignition along with the coil and the distributor of ignition and, of course, spark plugs.

Wire of a high voltage

Usually thick wires of a high voltage from the ignition coil to spark plugs (or to the distributor) do not deliver problems.

They should be strongly inserted by the antinoise sockets (against a radio noise) into nests of a cover of the distributor of ignition or ignition coils. Their shtekerny sockets should not be oxidized, and they should have a reliable contact to sockets of candles.

If the wire of a high voltage became firm and fragile, you should put a new wire. They are on sale for all engines assembled with the corresponding sockets.

In Audi it is impossible to use any sockets of candles. Sockets should have the internal resistance corresponding to system of ignition.

Councils: "Not tight" sites on a wire of a high voltage are easy for finding, if at the working engine at night to look in an impellent compartment. Then the spark jumping on a wire is well visible. On the contrary, do not cause fear the small light flares "running" along a wire.

If in the engine it is constant or with times (at crude weather) all cylinders, the reason sometimes in defective sockets of candles work not. There through an insulating material there are spark breakdowns between a metal cover and an electrode of a high voltage. More often on the socket of a candle it is not visible, it punches or not. For check replace the candle socket with another. Temporary help in a way: remove the metal screen of the socket.

Sequence of ignition

For balanced operation of the engine the fuel and air mix ignites in cylinders not in a row 1-2-3-4 (-5-6), and alternately. According to this sequence of ignition ignition wires are inserted into a cover of the distributor of the engine of 1,6 l. If the distributor finger at the removed cover of the distributor and a dustproof cover specifies on risk on the brink of the case, the moment of ignition is the share of the 1st cylinder (very first in the direction of travel).

In our engines the following sequence of ignition is established:

  • Four-cylinder engine: 1-3-4-2. The distributor finger in the engine of 1,6 l rotates to the right (clockwise). In the engine of 1,8 l of 92 kW the coil of ignition of the 3rd cylinder submits power supply on a wire of a high voltage also to the 2nd cylinder. The coil of ignition of the 4th cylinder on a wire of a high voltage submits power supply also on the 1st cylinder. In the engine of 1,8 l and capacity of 110 kW there is no danger of confusion because of separate coils of ignition.
  • Six-cylinder engine: 1-4-3-6-2-5. The distributor of ignition is not present – the arrangement of connecting knots of wires of a high voltage on a package of coils of ignition corresponds to an arrangement of cylinders. Example: the high-voltage wire in a junction point behind on the right approaches to the cylinder behind on the right.