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Home >> Porsche >> 2016 >> 911 Turbo, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine - 911 CARRERA (996)) >> Cooling system cleaned (oil/coolant mixture) >> Filling, bleeding and cleaning coolant circuit >> Filling coolant circuit with cleaning fluid and bleeding

Filling coolant circuit with cleaning fluid and bleeding

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
  1. Screw lid adapter for coolant expansion tank (K 22) onto the expansion tank.
  2. Connect the flexible extension (Fz 100 K) to the lid.
    Fig 1: Connecting Flexible Extension (Fz 100 K) To Coolant Expanstion Tank Lid
    G03100646Courtesy of PORSCHE OF NORTH AMERICA, INC.
  3. Connect the vacuum pressure gauge of the bleeder tool to the flexible extension. When doing so, ensure that both shutoff valves are closed (positioned 90° to flow direction)
  4. Connect the Venturi nozzle onto the vacuum pressure gauge.
    Fig 2: Connecting Venturi Nozzle Onto Vacuum Pressure Gauge
    G03100647Courtesy of PORSCHE OF NORTH AMERICA, INC.
    NOTE:
    • The radiator cleaning agent which is prepared must be approx. 2 litres more than the amount which has to be filled.
    • The cleaning agent is mixed in a ratio of 50:50.
  5. Place a canister with approx. 23 l coolant cleaning agent (mixed with 50% water) near to the coolant expansion tank.
  6. Connect the filler hose -(5)-  of the vacuum pressure gauge at the canister connection; put the return line -(6)-  of the Venturi nozzle into a collecting container. Refer to Fig 3.
    Fig 3: Connecting Filler Hose & Return Line
    G03100648Courtesy of PORSCHE OF NORTH AMERICA, INC.
    NOTE:
    • A hissing sound after connecting the compressed air supply is usual.
    • An air pass in the return line -(6)-  should not be obstructed. Refer to Fig 3.
  7. Connect compressed air supply.
    Fig 4: Connecting Compressed Air Supply
    G03100649Courtesy of PORSCHE OF NORTH AMERICA, INC.
  8. Open both shutoff valves on the vacuum pressure gauge until the transparent filler hose has completely filled with coolant.
    Fig 5: Opening Both Shutoff Valves On Vacuum Pressure Gauge Until Transparent Filler Hose Has Completely Filled With Coolant
    G03100650Courtesy of PORSCHE OF NORTH AMERICA, INC.
  9. Close the left shutoff valve (V1) on the vacuum pressure gauge and build up vacuum in the coolant circuit.
    Fig 6: Measuring Build-Up Of Vacuum In Coolant Circuit
    G03100651Courtesy of PORSCHE OF NORTH AMERICA, INC.
    NOTE:
    • If a vacuum does not build up, there is a leaking valve in the coolant circuit.
    • Deformation of the rubber hose of the cooling system is normal.
    • If the indicator of the pressure gauge is in the green area of the display scale, enough vacuum has been built up.
    • After both shutoff valves on the vacuum pressure gauge have been closed and the compressed air supply has been unplugged, the vacuum must not drop. If the vacuum drops within approx. 30 seconds, there is a leaking point in the coolant circuit.
  10. When there is enough vacuum in the cooling system (indicator is in the green area), close the right shutoff valve (V2) and subsequently unplug the compressed air supply.
  11. Reopen the left shutoff valve (V1) on the compressed air pressure gauge. The cooling system will now be filled. This procedure will take approx. 5 minutes.
    Fig 7: Identifying Compressed Air Pressure Gauge
    G03100652Courtesy of PORSCHE OF NORTH AMERICA, INC.
  12. When there is no trace of vacuum present or the coolant is no longer suctioned from the canister, open the right shutoff valve (V2).
    Fig 8: Opening Right Shutoff Valve (V2)
    G03100653Courtesy of PORSCHE OF NORTH AMERICA, INC.
  13. Subsequently remove the complete filling tool (including the lid K 22 ).
  14. Screw on the cap of the expansion tank.
    Fig 9: Screwing On Coolant Expansion Tank Cap
    G03100654Courtesy of PORSCHE OF NORTH AMERICA, INC.
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