Removal and installation of an inlet collector with a fuel stage. 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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2.6.7. Removal and installation of an inlet collector with a fuel stage

NOTE
To get access to nozzles, it is necessary to remove an inlet collector and a fuel stage together with the gate of movement of a portion of fuel for management of air. (Depending on option the different number of working operations can be required).
Surely replace consolidation of the combustion chamber (teflon) and a sealing ring.

Removal
Remove a protective cover of the engine.
Turn off all necessary electric shtekerny connections.
Remove the vacuum hose passing between an inlet collector and the vacuum pump from an inlet collector.

NOTE
This vacuum hose and the vacuum pump (it is located behind on a head of the block of cylinders) are installed only in cars with the automatic transmission.


Fig. 2.73. Connecting union of a fuel-supply line


Disconnect a fuel-supply line (the following fuel collect and immediately close all open openings) (fig. 2.73).

Fig. 2.231. Hose connections


Disconnect hose connections from a cover of the valve (fig. 2.231).
Unscrew both screws 1 and 2 of a pipe of cooling liquid (fig. 2.231).

Fig. 2.232. Screws of fastening of an oil pipeline and pipe of cooling liquid


Unscrew screws from an oil pipeline 1 and from a pipe of cooling liquid 2 (fig. 2.232).
Turn off both fuel-supply lines on the pump of high pressure.
Open clips of a hose and remove the soaking-up hose from the control unit of a butterfly valve and from an inlet collector.

Fig. 2.233. Electric shtekerny connection of the sensor of pressure of fuel


Disconnect electric shtekerny connection 1 from the sensor of pressure of fuel (fig. 2.233).
Remove the probe for determination of level of oil and unscrew the screw of the 2nd guide of the probe of level of oil (fig. 2.233).

Fig. 2.234. Oil pipeline screw


Unscrew the screw of 1 oil pipeline (fig. 2.234).
Unscrew a fixing nut of a branch pipe of an inlet collector (if necessary also remove the control unit of a butterfly valve).

Fig. 2.235. Screw of the holder of an inlet collector and guide of the probe of level of oil


Separate a guide of the probe of level of oil 2 in the place of separation and turn off the screw of 1 holder of an inlet collector (fig. 2.235).
Unscrew all screws of an inlet collector.
Carefully remove an inlet collector together with a fuel stage from a head of the block of cylinders.

NOTE
Nozzles can remain in a fuel stage.

Installation
Installation is carried out in the return sequence.

Inhaling moments


2.6.6. Removal and installation of a flowmeter of air

2.6.8. Removal and installation of a fuel stage (Rail)