since 1997 of release

Repair and car operation

Foltsvagen Golf 4
+ 1. Maintenance instruction
+ 2. Engine
+ 3. Cooling system
- 4. Fuel system
   + 4.1. Cars with petrol engines
   - 4.2. Cars with diesel engines
      4.2.1. Direct injection of fuel
      4.2.2. Fuel tank
      4.2.3. Specifications
      4.2.4. Check of system of preliminary heating of the diesel engine
      4.2.5. Check of candles of an incandescence
      4.2.6. Removal and installation of candles of an incandescence
      4.2.7. System of heating of fuel
      - 4.2.8. Fuel nozzles Removal and installation
      4.2.9. Moment of injection of the fuel pump of a high pressure
      4.2.10. Main malfunctions of a control system of the engine
+ 5. Exhaust system
+ 6. Ventilation and heating system
+ 7. Coupling
+ 8. Transmission
+ 9. Suspension brackets and power shafts
+ 10. Steering
+ 11. Wheels and tires
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment and electroschemes

4.2.8. Fuel nozzles



At check of work of fuel nozzles never hold up hands or any part of a body under the stream of fuel leaving a nozzle. Fuel leaves a nozzle under a high pressure and can get into a body through skin. It is recommended to charge to the expert work on check of nozzles under pressure.

For definition of a faulty nozzle it is necessary to be convinced that the engine is serviceable and level of a compression is identical in all cylinders.


1. Start the engine and warm up it to normal working temperature.
2. Weaken an union nut топливопровода on a checked nozzle. Note, whether engine turns changed.
3. At a serviceable fuel nozzle obvious reduction of turns of the engine, being accompanied will be observed by its non-uniform work. If the checked nozzle is faulty, change of turns of the engine will be insignificant and will be gone, if was present earlier, extraneous knock.
4. To existence of a faulty fuel nozzle point the following deviations in operation of the engine:
      – admissions in operation of cylinders;
      – knock in one or several cylinders;
      – engine overheat;
      – engine capacity reduction;
      – from an exhaust pipe there is a black dense smoke;
      – the increased fuel consumption;
      – a dark blue smoke at start of the cold engine.