Check of pressure of fuel and residual pressure in front of the pump of high pressure. Audi A4 (from 2001 to 2005 release)
Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
2.1. General information
2.2. Predvaritlny checks
2.3. Mekhanichsky part (petrol engines 2,0l)
2.4. Lubrication system
2.5. Cooling system
2.6. System of injection
2.6.1. Removal and installation of a turbocharger
2.6.2. Removal and installation of the vacuum block of a turbocharger
2.6.3. Adjustment of the vacuum block of a turbocharger (the turbocharger is removed)
2.6.4. The general instructions on self-diagnostics of system of injection
2.6.5. Decrease in 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 with a fuel stage
2.6.8. Removal and installation of a fuel stage (Rail)
2.6.9. Removal and installation of nozzles
2.6.10. Check of pressure of fuel and residual pressure in front of the pump of high pressure
2.6.11. Check of residual pressure
2.6.12. Removal and installation of the pump of high pressure
2.6.13. Replacement of the control unit of the engine
2.6.14. Removal and installation a lambda probe in front of the catalyst
2.6.15. Removal and installation a lambda probe after the catalyst
2.6.16. The fuel tank (front-wheel cars – all models with MPI engines and 2,0 l of FSI)
2.6.17. Pumping of fuel from a tank
2.6.18. Removal and installation of the fuel tank with hinged details
2.6.19. Electric check of the fuel pump
2.6.20. Check of amount of the fuel given by the fuel pump (cars from the 4th the cylinder engine with a free admission)
2.6.21. Check of amount of the fuel given by the fuel pump (atomobil with the engine of 1,8 l Turbo)
2.6.22. Check of amount of the fuel given by the fuel pump (atomobil from the 4th the cylinder FSI engine)
2.6.23. Check of amount of the fuel given by the fuel pump (cars from 6 the cylinder MPI engine)
2.6.24. Removal and installation of knot of supply of fuel
2.6.25. Fuel tank (all-wheel drive cars till 10:04)
2.6.26. Pumping of fuel from a tank
2.6.27. Removal and installation of knot of a pedal of an accelerator with sensors of provision of a pedal
2.7. System of production of the fulfilled gases
2.8. Mechanical part (petrol engines 3,0; 3,2 l)
2.9. Mechanical part (petrol engines of 4,2 l)
2.10. Mechanical part (diesel engines of 2,0 l)
2.11. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 







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2.6.10. Check of pressure of fuel and residual pressure in front of the pump of high pressure

Conditions of carrying out tests
The minimum voltage of joint stock bank is 12,5 Century.

Fig. 2.227. Block of safety locks


The safety lock in a block of safety locks has to be serviceable (a nest 28) (fig. 2.227).
The fuel filter has to be in good repair.
The fuel tank has to be filled not less than on 1/4.

Procedure for test
Switch off ignition.
Limousine
Remove a luggage carrier upholstery.
To cast away if necessary the right back of a back seat forward.
Avant
Remove a back, 1/3 at the left.
Remove a luggage carrier covering sideways at the left and a mud-reception bathtub.
All cars

Fig. 2.241. Fastening of a cover of a deaf flange


Turn off a cover of a deaf flange (fig. 2.241).

Fig. 2.242. Electric shtekerny connection on a deaf flange


Disconnect electric shtekerny connection on a deaf flange (fig. 2.242).
Connect remote control with an adaptor cable by means of an auxiliary wire from a set of supportive measuring applications to contact 1.
Stick the 2nd contact of the plug of an adaptor cable with an insulating tape for prevention of short circuit.
Connect contact 4 by means of an auxiliary wire from a set of supportive applications of measurement to the mass of a body.
Connect the tokosjemny plug to joint stock bank of the car (on plus).
Turn off a cover of a jellied mouth of the fuel tank.

Fig. 2.54. Engine casing


Remove a protective cover of the engine (fig. 2.54).
Disconnect the giving fuel-supply line.
Connect the device of measurement of pressure with adapters to the giving fuel-supply line.

Fig. 2.243. Installation of the device of measurement of pressure with adapters


Put on an auxiliary hose the device of measurement of pressure and lower the second end in a reception vessel (fig. 2.243).
Open the locking crane of the device of measurement of pressure. The lever shows the direction of course.
Ventilate fuel system, for this purpose shortly press the button on the remote control.
Close the locking crane of the device of measurement of pressure. The lever is installed across the direction of course now.
Press and do not release the switch of remote control until pressure on the device of measurement of pressure does not cease to grow.
Preset value: прибл. 6 bars (5–7 bars) of excessive pressure.
If the preset value of pressure is not reached, check giving of the electric fuel pump.


2.6.9. Removal and installation of nozzles

2.6.11. Check of residual pressure