Compression Pressure, Checking

WARNING: This page is about a different car, the 2009 Volkswagen Rabbit, 2008 Volkswagen Rabbit, 2007 Volkswagen Rabbit, and 2006 Volkswagen Rabbit. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Spark Plug Removal Tool 3122 B
Ignition Coil Puller T40039
Torque Wrench (5-50 Nm) V.A.G 1331
Compression Tester V.A.G 1763
Adapter V.A.G 1381/5A

Test Conditions

The engine oil temperature must be at least 30 °C (86 °F).
The voltage supply is OK.

-- Remove the engine cover with air filter. Refer to ENGINE COVER WITH AIR FILTER .

-- Disconnect the connectors from all the fuel injectors.

-- Remove the ignition coils with power output stage. Refer to IGNITION COIL WITH POWER OUTPUT STAGE .

-- Remove the spark plugs using the spark plug removal tool 3122 B.

-- Check the compression using the compression tester V.A.G 1763 and the adapter V.A.G 1381/5A.

NOTE:

Using the compression tester, refer to the operating instructions.

-- Operate the starter until the tester no longer indicates that the pressure is increasing.

Compression Pressure

New Bar Positive Pressure	Wear Limit Bar Positive Pressure	Difference Between Cylinders Bar Positive Pressure
9.0 ••• 13.0	8.0	Max. 3.0

NOTE:

By disconnecting the connectors, Diagnostic Trouble Codes (DTCs) are stored to memory. After the test, check the DTC memory and erase, if necessary.

-- Read the Engine Control Module (ECM) DTC memory. Refer to the vehicle diagnostic tester.