Passat Sedan 4Motion W8-4.0L (BDP) (2002)
Test sequence
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Remove fuse No. 32 from fuse holder.
Note: Removing fuse No. 32 interrupts the voltage supply to the injectors.
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Remove engine cover.
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Loosen coolant expansion tank and place to one side.
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Remove air cleaner upper part.
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Remove intake manifold side parts.
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Disconnect all 4-pin connectors from ignition coils.
Note: Before disconnecting the connector, mark the component to which it belongs.
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Remove ignition coils with output stages using puller T10094.
CAUTION: Use of tool T10094 is required to avoid damaging these sensitive components.
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Remove spark plugs with spark plug socket and extension 3122B.
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Check compression pressure with compression tester VAG 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:
New: 10... 13 bar
Wear limit: 9 bar
Permissible difference between all cylinders: 3 bar
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Check fault memory, if necessary, repair any malfunctions and then erase fault memory.