Compression Pressure, Checking

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Special tools and workshop equipment required

Spark Plug Removal Tool 3122B
Compression Tester Kit VAG1763

Test sequence

NOTE:

Engine oil temperature: minimum 30 °C (86 °F)

Battery voltage at least 12.7 V

-- Remove the engine cover, refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Remove the ignition coils with power output stages, refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

-- Remove the spark plugs using a Spark Plug Removal Tool 3122B.

-- Check the compression pressure using the Compression Tester Kit VAG1763 and Compression Tester Kit - Adapter 6 VAG1763/6.

NOTE:

For information on using the tester, refer to the Operating Instructions.

-- Operate the starter until tester shows no further pressure increase.

Compression Pressure:

New Bar Positive Pressure	Wear Limit Bar Positive Pressure	Difference Between Cylinders Bar Positive Pressure
11 to 14 bar (160 to 203 psi)	7 bar (101.52 psi)	maximum 3 bar (43 psi)

-- Install the spark plugs, refer to SPARK PLUGS, REPLACING .

-- Install the ignition coils with power output stages, refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

-- Install the engine cover, refer to ENGINE COVER, REMOVING AND INSTALLING .

-- If there are any faults stored in the Diagnostic Trouble Code (DTC) memory that occurring during testing, erase them on the Vehicle Diagnostic Tester, Guided Functions , Check DTC Memory , then Generate Readiness Code .