Compression pressures, checking

WARNING: This page is about a different car, the 2004 Volkswagen R32. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Special Tools - Compression Pressures, Checking

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Special tools, testers and auxiliary items required

Puller T10095 A
Torque wrench V.A.G 1331
Compression tester V.A.G 1763
Spark plug removal tool 3122 B

Assembly tool T10118

Test conditions

Engine oil temperature at least 30 ° C
Battery voltage must be at least 11.5 V.

Test sequence

Remove engine cover.

For engine codes BJS

Fig 2: Identifying Assembly Tool T10118 On Release Button

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Place assembly tool T10118 on release button - arrow -, release connector retainers, and carefully pull off connectors from ignition coils 1 to 6.

Fig 3: Pushing The Remover T10095/A From The Straight Connector Side

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From straight side of connector, push puller for ignition coil T10095 A on in direction of - arrow -, and pull out the ignition coil with power output stage.

Fig 4: Identifying Main Fuse Panel

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Remove fuse No. 29 from fuse holder.

Removing fuse No. 29 interrupts the voltage supply to the injectors.

The spark plugs are removed from all engines using spark plug removal tool 3122 B.
Check compression pressure using compression tester V.A.G 1763.

NOTE:

Using tester, refer to Operating instructions.

Operate starter until tester shows no further pressure increase.

Compression pressure:

New: 10 to 13 bar pressure

Wear limit: 7.5 bar pressure

Permissible difference between all cylinders: 3 bar

Thereafter, reinstall spark plugs and ignition coils with power output stages, refer to Ignition coils with power output stage, removing and installing