A6 Quattro Sedan V6-3.0L (AVK) (2002)
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Detach Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-1- at air filter housing.
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Disconnect electrical harness connector-2- at Mass Air Flow (MAP)sensor.
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Remove air guide hose -3- together with Mass Air Flow (MAF)sensor.
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Remove air filter housing (arrows).
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Remove bolts -4- and -5- from left cylinder head.
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Disconnect electrical harness connectors -1- to -3- and -6-.
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Remove ignition coils (arrows).
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Remove bolts -5- and -6- from right cylinder head.
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Disconnect electrical harness connectors -1- to -4-.
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Remove ignition coils (arrows).
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Using 3122B spark plug removal tool, remove spark plugs.
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Remove all harness connectors to injectors.
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Open throttle fully.
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Using VAG1381 or VAG1763 compression tester, test engine compression.
Note: Using VAG1381 or VAG1763 Compression Tester:
Refer to, Operating instructions