A4 Sedan L4-2.0L Turbo (BPG) (2005)
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Remove crankcase ventilation line from turbocharger - 1 -.
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Pull off crankcase ventilation line from the cylinder head cover - 2 - and remove it.
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Disconnect EVAP line to turbocharger from cylinder head cover - 3 - .
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Remove oil supply line from turbocharger - 4 - .
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Remove catalytic converter
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Remove coolant supply line to turbocharger - arrow - .
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For vehicles with auxiliary heater, remove bolts - arrows - for exhaust pipe of parking heater/auxiliary heater on noise insulation.
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Loosen quick-release fasteners - 1 - and - 2 - and remove front noise insulation.
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Remove quick-release fasteners - 3 - and remove rear noise insulation, if installed.
