Auto Manual of VW Passat B5

VW Passat
The maintenance instruction
1. Maintenance service
2. Engines
3. Cooling system
- 4. Fuel system
   4.2. The fuel pump/gauge of level of fuel
   4.3. The fuel filter on models with petrol engines
   4.4. Adjustment of a cable of an accelerator (the petrol engine)
   4.5. Additional adjustment (an automatic transmission)
   - 4.6. Fuel system of the diesel engine
      4.6.2. The general information
      4.6.3. Check of system of preliminary heating of the diesel engine
      4.6.4. Check of candles накаливания
      4.6.5. Candles накаливания
      4.6.6. System of heating of fuel
      4.6.7. Fuel atomizers
      4.6.8. The basic malfunctions of a control system of the engine
5. Engine management
6. An exhaust system
7. Transmission
8. A running gear
9. A steering
10. Brake system
11. A body
12. Heating, ventilation
13. An electric equipment


4.6.6. System of heating of fuel

For increase in fluidity of diesel fuel at low temperatures of external air it is necessary for warming up. The heating is made by additional swapping of fuel which comes back from the fuel pump of a high pressure in a fuel tank. Passing through the fuel pump of a high pressure fuel it is warmed up. In the pipeline of return of fuel the adjusting valve which operates a stream of fuel depending on temperature of the fuel filter is established. At temperature of external air more low 15 About the fuel which has been warmed up by the fuel pump of a high pressure goes to the fuel filter. At air temperature above 31 About the adjusting valve directs the fuel which has been warmed up by the fuel pump of a high pressure directly in a fuel tank. The adjusting valve is located from the top party of the fuel filter.

If the engine is not started at low temperature of air in connection with загустеванием diesel fuel, execute following actions:

  – Remove the fuel filter and warm up its ferry;
  – Replace the fuel filter with the new;
  – Warm up the injection device, pouring over its hot water.