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
2.2.1. Visual check on existence of untight sites and damages to a motor compartment
2.2.2. Cleaning of the case and replacement of the filtering element of the vzdushny filter
2.2.3. Check of a tension and existence of damages of a gear belt of the drive of cam-shafts (V6TDI engines)
2.2.4. Check of a tension and existence of damages (V6 TDI), adjustment of a tension of a gear belt of the TNVD drive
2.2.5. Replacement of spark plugs
2.2.6. Check and, if necessary, refueling of cooling liquid
2.2.7. Removal of a cover of a motor compartment
2.2.8. Replacement of the fuel filter (TDI engines)
2.3. Mekhanichsky part (petrol engines 2,0l)
2.4. Lubrication system
2.5. Cooling system
2.6. System of injection
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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2.2.5. Replacement of spark plugs

ATTENTION
Establish a stripper on the most top thick edge of coils of ignition and separate it from spark plugs as at the subsequent installation of a stripper on the lower edges them it is possible to damage (fig. 2.23).

4-tsit. petrol engines 2V 1.6 of l
Remove a protective cover of the engine.

Fig. 2.24. Tips of spark plugs


At the switched-off ignition remove tips 1 from spark plugs (fig. 2.24).
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
Check reliability of fixing of high-voltage wires and tips of spark plugs.
Inhaling moment: spark plugs in a head of cylinders – 30 N · m.

4-tsit. petrol engines 5V 1.8 of l with a turbo-supercharging
Switch off ignition.
Remove a protective cover of the engine.

Fig. 2.25. Tips of coils of ignition


Remove tips 1 from coils of ignition (fig. 2.25).
Press a tip 1 in the direction of the ignition coil.
Press by hand a latch and remove a tip.
Remove by means of a coil stripper from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.

4-tsit. petrol engines 5V 2.0 of l, 2.0 l of FSI and 2.0 TFSI
Switch off ignition.
Remove a protective cover of the engine (in the presence).
Remove both bolts 1.

Fig. 2.26. Tips of coils of ignition and bolts of fastening of a stage


Press a tip 2 in the direction of the coil of ignition (fig. 2.26).
Press by hand a latch and remove a tip.
Remove by means of a coil stripper from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.

6-tsit. petrol engines of 3.0 l and 3.2 FSI
Switch off ignition.
Remove a protective cover of the engine (in the presence).
Right number of cylinders
Remove the top part of the air filter.
Remove both bolts 1.
Press a tip 2 in the direction of the ignition coil. Press by hand a latch and remove a tip.

Fig. 2.27. Tips of coils of ignition and bolts of fastening of a stage


Remove by means of a coil 3 stripper from spark plugs (fig. 2.27).
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.

Left number of cylinders

Fig. 2.28. A tank with cooling liquid


Unscrew a tank with cooling liquid (fig. 2.28).
Fix a tank with the hoses attached to it 1–3 aside.
Remove both bolts 1.

Fig. 2.29. Tips of coils of ignition and bolts of fastening of a stage


Press a tip 2 in the direction of the coil of ignition (fig. 2.29).
Press by hand a latch and remove a tip.
Remove by means of a coil 3 stripper from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.

8-tsit. petrol engines of 4,2 l of MPI
Switch off ignition.
Right number of cylinders
Remove the top part of the air filter.
Remove both bolts 1

Fig. 2.30. Tips of coils of ignition and bolts of fastening of a stage


Press a tip 2 in the direction of the coil of ignition (fig. 2.30).
Press by hand a latch and remove a tip.
Remove by means of a coil 3 stripper from spark plugs.
Unscrew spark plugs the Key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.

Left number of cylinders

Fig. 2.31. Left casing of a motor compartment


Remove a casing, having pulled it (fig. 2.31) up.
Unscrew a tank with cooling liquid (fig. 2.28).
Fix a tank with the hoses attached to it 1–3 aside.
Remove both bolts 1

Fig. 2.32. Tips of coils of ignition and bolts of fastening of a stage


Press a tip 2 in the direction of the coil of ignition (fig. 2.32).
Press by hand a latch and remove a tip.
Remove by means of a coil 3 stripper from spark plugs.
Unscrew spark plugs the Key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.

8-tsit. petrol engines of 4.2 l (RS4)
Switch off ignition.
Right number of cylinders
Remove the top part of the air filter.
Remove both bolts 1
Press a tip 2 in the direction of the coil of ignition (fig. 2.30). Press by hand a latch and remove a tip.
Remove by means of a coil 3 stripper from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.

Left number of cylinders
Unscrew a tank with cooling liquid (fig. 2.28).
Fix a tank with the hoses attached to it 1–3 aside.
Remove both bolts 1
Press a tip 2 in the direction of the coil of ignition (fig. 2.32). Press by hand a latch and remove a tip.
Remove by means of a coil 3 stripper from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
Inhaling moment: spark plugs in a head of the block of cylinders – 30 N · m.

NOTE
Insert coils of ignition by hand into the heads of the block of cylinders provided for this nest in a cover.


2.2.4. Check of a tension and existence of damages (V6 TDI), adjustment of a tension of a gear belt of the TNVD drive

2.2.6. Check and, if necessary, refueling of cooling liquid