Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation



Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ injection System
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
- Ignition system
   Various systems of ignition
   Principle of work of ignition
   Executive body
   System "brain"
   Impulses for the control unit
   Regulation on a detonation
   Security measures at work with ignition system
   Repair of system of ignition
   Diagnostics of system of ignition
   Ignition distributor
   Sensor of detonation combustion
   Elements of a high voltage
   Replacement of spark plugs
   Spark plugs
   Check of the moment of ignition
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications





Elements of a high voltage

High-voltage wires

A high-voltage part of system of ignition treat along with the coil of ignition and the distributor – about them already there was a speech – as well high-voltage wires, tips of wires with the pomekhopodavlyayushchy resistor and, of course, spark plugs.

The thick connecting wires passing from the coil of ignition to the distributor or from the distributor to spark plugs (to model with the 6-cylinder engine without the distributor), usually do not deliver any efforts. They should be densely inserted by the tips with pomekhopodavlyayushchy resistors (noise elimination for radio) into nests of a cover of the distributor of ignition. Their shtekerny connections should not be oxidized, and they should have a good contact to tips of spark plugs.

If high-voltage wires became rigid and fragile, it is necessary to establish the new. For the 6-cylinder engine they can be bought complete with both tips.

For 4-and 5-cylinder engines you need to get a cut of a multiwire flexible copper high-voltage wire necessary for you and brass plugs relating here for the cable ends in shop of spare parts. To squeeze brass plugs on the cable ends, to put on tips of spark plugs and tips with pomekhopodavlyayushchy resistors before fixing, it is ready.

 Help: "not tight" places in high-voltage wires can be noticed if to glance at night at the working engine in a motor compartment. Then the sparks of ignition slipping on a cable are well visible. The weak light patches of light "running" on a cable, on the contrary, are absolutely harmless.

Tips of candles, tips with pomekhopodavlyayushchy resistors

  • In Audi it is possible to apply only certain tips of spark plugs. Suitable tips should have own resistance of 4 — 6 kiloohms.
  • The same treats and tips with the pomekhopodavlyayushchy resistors established on connections of the distributor and the coil of ignition. Their own resistance should make 0,6 — 1,4 kiloohms.
  • Begunok of the ignition distributor also should have a certain pomekhopodavlyayushchy resistor 0,6 — 1,4 kiloohms. It is designated by "R1" inscription.

 Help: if the engine constantly or from time to time (at damp weather) works not on all cylinders, it can be quite often connected with faulty tips of spark plugs. There is a leakage of a spark through an insulating material between a metal cover and a high-voltage electrode. Otherwise in most cases it is impossible to determine by a candle tip, whether it "punches". For check replace a candle tip with another. Help on the way: remove the metal screen of the tip.

Ignition order

High-voltage wires of the distributor of ignition incorporate to candles according to an ignition order. Figures show, to what cylinder (an account method: in front back) the corresponding wire should be brought. At the left the 4-cylinder engine, on the right – 5-cylinder is represented.

For equal operation of the engine cylinders, for example the 4-cylinder engine, light not as 1-2 – 3-4, and in a sense words randomly. According to an order of ignition high-voltage wires are brought to a cover of the distributor of ignition. If the distributor begunok at the removed cover of the distributor and the removed dustproof cover shows on a mark on the brink of the distributor case, means, the cylinder 1 (what ahead of all the others in the movement direction) is in the ignition moment. It is a starting point at putting on of wires.

Ignition order (operating procedure of cylinders) in our engines is as follows:

 PERFORMANCE ORDER

  1. 4-cylinder engine: 1–3–4–2, the begunok of the distributor rotates to the right (clockwise).
  2. 5-cylinder engine: 1–2–4–5–3, the begunok of the distributor rotates to the right (clockwise).
  3. 6-cylinder engine: 1–4–3–6–2–5. The distributor is absent – the order of connections of wires of a high voltage to a package of coils of ignition corresponds to an order of cylinders. Example: the high-voltage wire from connection behind on the right conducts to the cylinder behind on the right.