GLI L4-2.0L Turbo (CCTA) (2008)
Compression Check: Testing and Inspection
Compression, Checking
Special tools, testers and auxiliary items required
‹› Spark plug removal tool (3122B)
‹› Ignition coil puller (T40039)
‹› Torque wrench 5-50 Nm (VAG 1331)
‹› Compression tester (VAG 1763) with Adapter (VAG 1763/6)
Test Conditions
‹› Engine oil temperature must be at least 30 °C.
‹› Battery voltage at least 12.7 V
Test Sequence
‹› Observe the safety precautions. Refer to --> [ Safety Precautions ] See: Powertrain Management/Ignition System/Service Precautions/Safety
Precautions.
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Remove the ignition coils with the power output stages. Refer to --> [ Ignition Coils with Power Output Stages ] See: Powertrain
Management/Ignition System/Ignition Coil/Service and Repair.
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Remove the spark plugs using the (3122B).
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Check compression using the (VAG 1763) and the (VAG 1763/6).
‹› Using tester, refer to --> operating instructions.
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Activate the starter until no further pressure increases are indicated by the (VAG 1763).
Compression Pressure
‹› New: 11.0 to 14.0 bar pressure.
‹› Wear limit: 7.0 bar pressure.
‹› Permissible difference between all cylinders: Max. 3 bar.
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Install the spark plugs. Refer to --> [ Ignition Assembly Overview ] See: Powertrain Management/Ignition System/Service and Repair.
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Install the ignition coils With power output stages. Refer to --> [ Ignition Coils with Power Output Stages ] See: Powertrain Management/Ignition
System/Ignition Coil/Service and Repair.
‹› By disconnecting the connectors, Diagnostic Trouble Codes (DTCs) are stored to memory. After the test, check the fault memory and erase, if
necessary.
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Check the Engine Control Module (ECM) DTC memory and erase all DTC entries which may have occurred during assembly.
‹› If the DTC memory was erased, generate a readiness code.