GLI L4-2.0L Turbo (BPY) (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)
‹› Adapter (VAG 1381/5A)
Test Conditions
‹› Engine oil temperature must be at least 30 °C (86 °F).
‹› Voltage supply OK.
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Remove the engine cover/upper air filter housing. Refer to --> [ Engine Cover/Upper Air Filter Housing ] See: Air Cleaner Housing/Service and
Repair/Engine.
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Remove 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.
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Remove the spark plugs using the (3122B).
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Check the compression using the (VAG 1763) and the (VAG 1381/5A).
‹› Using the (VAG 1763), refer to --> operating instructions.
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Have a second technician operate the starter.
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Operate starter until the (VAG 1763) shows no further pressure increase.
Compression Pressure
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Check the Engine Control Module (ECM) Diagnostic Trouble Code (DTC) memory and erase any DTC entries. Refer to --> [ Engine Control
Module DTC Memory, Checking and Erasing ] See: Powertrain Management/Computers and Control Systems/Engine Control Module/Testing
and Inspection/Component Tests and General Diagnostics/Engine Control Module DTC Memory, Checking and Erasing.