Compression Check: Testing and Inspection

Compression pressures, checking





Special tools, testers and auxiliary items required
^ Hinged socket 3220
^ Torque wrench (5 to 50 Nm) V.A.G 1331
^ Adapter V.A.G 1381/12
^ Compression tester V.A.G 1763

Conditions
^ Engine oil temperature min. 30° C

Work sequence
- Disconnect central connector for Pump-Injector unit.
- Remove all ceramic glow plugs with hinged socket 3220.

Note: Always observe the notes for removal and installation of ceramic glow plugs.





- Install adapter V.A.G 1381/12 in place of ceramic glow plugs.
- Check compression pressure using compression tester V.A.G 1763.

Note: Using the compression tester Operating instructions.

- Operate starter until tester shows no further pressure increase.

Compression pressure
New: 25 to 31 bar pressure
Wear limit: 19 bar pressure
Permissible difference between all cylinders: 5 bar

Note: Always observe the notes for removal and installation of ceramic glow plugs.

- Install ceramic glow plugs with hinged socket 3220.

Note: By disconnecting the central connection for the Pump-Injector unit, DTCs will be stored. Read the DTC memory and erase it, if necessary.