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
2.2.1. Visual check on presence of not tight sites and damages to a motor compartment
2.2.2. Clearing of the case and replacement of a filtering element вздушного the filter
2.2.3. Check of a tension and presence of damages of a gear belt of a drive of cam-shafts (engines V6TDI)
2.2.4. Check of a tension and presence of damages (V6 TDI), adjustment of a tension of a gear belt of drive ТНВД
2.2.5. Replacement of spark plugs
2.2.6. Check and, at necessity, refuelling of a cooling liquid
2.2.7. Removal of a cover of a motor compartment
2.2.8. Replacement of the fuel filter (engines TDI)
2.3. A Mehanichsky part (petrol engines 2,0л)
2.4. Greasing system
2.5. Cooling system
2.6. Injection system
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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2.2.5. Replacement of spark plugs

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

4-tsil. Petrol engines 2V 1.6 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 up reliability of fixing of high-voltage wires and tips of spark plugs.
The inhaling moment: spark plugs in a head of cylinders – 30 Нм.

4-tsil. Petrol engines 5V 1.8 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 ignition coils (fig. 2.25).
Press a tip 1 in a direction of the coil of ignition.
Press by hand a latch and remove a tip.
Remove by means of a stripper of the coil from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
The inhaling moment: spark plugs in a head of the block of cylinders – 30 Нм.

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.

4-tsil. Petrol engines 5V 2.0 l, 2.0 l FSI and 2.0 TFSI
Switch off ignition.
Remove a protective cover of the engine (at 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 a direction of the coil of ignition (fig. 2.26).
Press by hand a latch and remove a tip.
Remove by means of a stripper of the coil from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
The inhaling moment: spark plugs in a head of the block of cylinders – 30 Нм.

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.

6-tsil. Petrol engines of 3.0 l and 3.2 FSI
Switch off ignition.
Remove a protective cover of the engine (at presence).
The right number of cylinders
Remove the top part of the air filter.
Remove both bolts 1.
Press a tip 2 in a direction of the coil of ignition. 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 stripper of the coil 3 from spark plugs (fig. 2.27).
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
The inhaling moment: spark plugs in a head of the block of cylinders – 30 Нм.

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.

The left number of cylinders

Fig. 2.28. A tank with a cooling liquid


Unscrew a tank with a 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 a direction of the coil of ignition (fig. 2.29).
Press by hand a latch and remove a tip.
Remove by means of a stripper of the coil 3 from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
The inhaling moment: spark plugs in a head of the block of cylinders – 30 Нм.

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.

8-tsil. Petrol engines of 4,2 l MPI
Switch off ignition.
The 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 a direction of the coil of ignition (fig. 2.30).
Press by hand a latch and remove a tip.
Remove by means of a stripper of the coil 3 from spark plugs.
Unscrew spark plugs the Key for spark plugs.
Screw in new spark plugs.
The inhaling moment: spark plugs in a head of the block of cylinders – 30 Нм.

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.

The left number of cylinders

Fig. 2.31. The left casing of a motor compartment


Remove a casing, having pulled it upwards (fig. 2.31).
Unscrew a tank with a 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 a direction of the coil of ignition (fig. 2.32).
Press by hand a latch and remove a tip.
Remove by means of a stripper of the coil 3 from spark plugs.
Unscrew spark plugs the Key for spark plugs.
Screw in new spark plugs.
The inhaling moment: spark plugs in a head of the block of cylinders – 30 Нм.

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.

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

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.

The left number of cylinders
Unscrew a tank with a 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 a direction of the coil of ignition (fig. 2.32). Press by hand a latch and remove a tip.
Remove by means of a stripper of the coil 3 from spark plugs.
Unscrew spark plugs a key for spark plugs.
Screw in new spark plugs.
The inhaling moment: spark plugs in a head of the block of cylinders – 30 Нм.

THE NOTE
Ignition coils insert by hand in provided for this nest in a cover of a head of the block of cylinders.


2.2.4. Check of a tension and presence of damages (V6 TDI), adjustment of a tension of a gear belt of drive ТНВД

2.2.6. Check and, at necessity, refuelling of a cooling liquid