Audi A4 with 2001- 2005 of release.
1. Operation and car maintenance service
2. The engine
2.1. The general data
2.2. Predvaritlnye checks
2.3. A Mehanichsky part (petrol engines 2,0л)
2.4. Greasing system
2.5. Cooling system
2.6. Injection system
2.6.1. Removal and installation turbocharger
2.6.2. Removal and installation of the vacuum block turbocharger
2.6.3. Adjustment of the vacuum block turbocharger (турбонагнетатель it is removed)
2.6.4. The general instructions on self-diagnostics of system of injection
2.6.5. Decrease in a high pressure of fuel
2.6.6. Removal and installation of a flowmeter of air
2.6.7. Removal and installation of an inlet collector from a fuel stage
2.6.8. Removal and installation of a fuel stage (Rail)
2.6.9. Removal and installation of atomizers
2.6.10. Check of pressure of fuel and residual pressure in front of the high pressure pump
2.6.11. Check of residual pressure
2.6.12. Removal and installation of the pump of a high pressure
2.6.13. Replacement of the block of management of the engine
2.6.14. Removal and ljambda-probe installation in front of the catalyst
2.6.15. Removal and installation a ljambda-probe after the catalyst
2.6.16. A fuel tank (front-wheel cars – all models with engines MPI and 2,0 l FSI)
2.6.17. Откачка fuel from a tank
2.6.18. Removal and installation of a fuel tank from hinged details
2.6.19. Electric check of the fuel pump
2.6.20. Check of quantity of fuel submitted the fuel pump (cars with 4 cylinder engine with a free admission)
2.6.21. Check of quantity of fuel submitted the fuel pump (атомобили with the engine of 1,8 l Turbo)
2.6.22. Check of quantity of fuel submitted the fuel pump (атомобили with 4 cylinder engine FSI)
2.6.23. Check of quantity of fuel submitted the fuel pump (cars with 6 cylinder engine MPI)
2.6.24. Removal and installation of knot of giving of fuel
2.6.25. A fuel tank (all-wheel drive cars till 10.04)
2.6.26. Откачка fuel from a tank
2.6.27. Removal and installation of knot of a pedal of an accelerator from gauges of position of a pedal
2.7. System of release of the fulfilled gases
2.8. A mechanical part (petrol engines 3,0; 3,2)
2.9. A mechanical part (petrol engines 4,2)
2.10. A mechanical part (diesel engines 2,0)
2.11. Tables
3. Transmission
4. A running gear
5. The steering mechanism
6. Brake system
7. An onboard electric equipment
8. A body
9. Electric equipment schemes
 







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2.6.4. The general instructions on self-diagnostics of system of injection

The block of management of the engine is equipped by self-diagnostics function. Before repair, and also for search of malfunctions first of all it is necessary to interrogate memory of malfunctions. It is necessary to check also vacuum hoses and connections (подсос air through thinnesses).
Hoses топливоподачи in a motor compartment are necessary for fixing only spring collars. Application of tightening or screw collars is inadmissible.
For excellent job of electric knots pressure not less is necessary than 11,5 Century
Do not use силиконосодержащие hermetics. Traces of silicone components soaked up by the engine do not burn down in the engine and damage a ljambda-probe.
Cars are equipped by the device of a stopping delivery of fuel at failure. It should reduce danger of fire of the car after blow thanks to that the fuel pump is disconnected by means of the relay of the fuel pump.
Simultaneously by means of this device improvement of parametres of process of start-up of the engine is reached also. At opening of a door of the driver the fuel pump is started on 2 with for pressure creation in fuel system, thus it is necessary to observe security measures.
Before opening of system of injection of a high pressure it is necessary to adhere to a following operations procedure necessarily

Fig. 2.227. The block of safety locks


From safety reasons before opening of fuel system if АКБ it is not disconnected, it is necessary to take out a safety lock 28 blocks of management of the fuel pump as the fuel pump joins by means of the door switch of illumination of a door of the driver (fig. 2.227).

THE NOTE
The safety lock is in колодке safety locks on the instrument panel.

By removal of a safety lock 28 power supplies of the plug 30 for the block of management of the fuel pump stop.

ATTENTION
The injection system is divided into a high pressure contour (a maximum nearby 110 bar) and a contour of low pressure (nearby 6 bar).

Before opening of a contour of a high pressure, for example, for removal of the pump of a high pressure, a fuel stage, an atomizer, a fuel highway or the gauge of pressure of fuel, it is necessary to lower pressure of fuel to residual pressure прибл. 6 bar. The operations procedure is for this purpose described more low.

Specifications


2.6.3. Adjustment of the vacuum block turbocharger (турбонагнетатель it is removed)

2.6.5. Decrease in a high pressure of fuel