Compression Pressure, Checking
Special tools and workshop equipment required
- Spark Plug Removal Tool 3122B
- Compression Tester Kit VAG1763
Test Sequence
Engine oil temperature: minimum 30 °C (86 °F)
Battery voltage at least 12.7V
-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .
-- Remover the ignition coils with the 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.
For information on using the tester. Refer to the Operating Instructions.
-- Operate the starter until tester shows no further pressure increase.
Compression Pressure
| New Positive Pressure | Wear Limit Positive Pressure | Difference Between Cylinders Positive Pressure |
|---|---|---|
| 11.0 to 14.0 bar (159.54 to 203.05 psi) | 7.0 bar (101.52 psi) | maximum 3.0 bar (43.5 psi) |
-- Install 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 .