911 Carrera 4 Cabriolet (997) F6-3.6L (2006)
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Note: A hissing sound after connecting the compressed air supply is usual.
6. Connect compressed air supply to Venturi nozzle
7. Open both shutoff valves on the vacuum pressure gauge until the transparent filler hose has completely filled with coolant.
8. Close left shutoff valve on the vacuum pressure gauge and allow a vacuum to build up in the coolant circuit.
