Audi A4, S4

since 2000 release

Repair and operation of the car

Audi A4, S4
+ Introduction
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Engine
+ Cooling systems, heating and air conditioner
- Power supply systems, release and decrease in toxicity of the fulfilled gases
   + Power supply systems of petrol and diesel engines
   + System of injection of fuel of the petrol engine
   - System of injection of fuel of the diesel engine
      General information
      Operation in the winter
      Checks of system of injection of fuel
   + Systems of release and decrease in toxicity of the fulfilled gases. Turbocompressor
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Operation in the winter

At decrease in temperature of external air the fluidity of diesel fuel owing to paraffin loss decreases. Diesel fuel on the fluidity becomes similar to honey and can hammer the filter. For this reason the additives increasing the fluidity of fuel and providing possibility of start of the engine at a temperature of external air to – 22 °C can be entered into diesel fuel in the winter.

To exclude a zabivaniye of the fuel filter at a low external temperature, fuel goes to the heat exchanger.