TT Coupe L4-1.8L Turbo (ATC) (2001)
Compression Check: Testing and Inspection
Compression, checking
Test requirements
‹› Engine oil temperature not less than 30°C
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Remove engine cover.
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Pull connector off Hall sender (G40) -arrow-.
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With ignition switched off, unplug connectors from ignition coils.
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Unbolt ignition coils.
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Remove spark plugs with spark plug spanner 3122B.
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Fully open throttle valve.
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Check compressions with compression tester V.A.G 1381 or V.A.G 1763.
Note: Using the compression tester: Refer to Operating instructions
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Operate starter until tester shows no further pressure increase.
Compression pressure:
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Install spark plugs and ignition coils.
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Check DTC memory.
Note: DTCs will be stored in file memory because connectors have been unplugged. Therefore, check and erase DTC memory after installing the
engine.