A4 Quattro Sedan L4-2.0L Turbo (CAEB) (2009)
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Open high pressure fuel line union nut - lower arrow - on the high pressure pump.
‹› The fuel system must have no pressure.
‹› Use a clean rag to absorb exiting fuel.
‹› Seal the open connections with clean caps and make sure no dirt has entered the fuel system.
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Remove vacuum line - arrow - from the intake manifold runner control valve.
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Remove coolant line bolt - arrow - from the intake manifold.