RS 6 V8-4.2L Turbo (BCY) (2003)
Compression Check: Testing and Inspection
Compression, checking
Special tools and equipment
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Spark plug wrench 3122 B
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Compression tester V.A.G 1763
Test requirements:
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Engine oil temperature not less than 30°C
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Battery voltage not less than 12.7 Volts
Test sequence
Note: All cable ties opened or cut during engine removal must be reinstalled at the same locations during installation.
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Remove air filter housing.
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Remove bolts -1- to -3-.
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Disconnect hose for right crankshaft housing ventilation at position indicated by (arrow).
Note: Disregard -item 4-.
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Remove pressure regulator valve and disconnect hose for crankshaft housing ventilation at left cylinder head.