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Home >> Saturn >> 2003 >> LW200 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Subsystems >> Evaporative Emission System Cleaning >> Cleaning Procedure
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Cleaning Procedure

  1. Raise and support vehicle.
  2. Disconnect the EVAP canister hose connections.
  3. Turn OFF the main valve on the diagnostic station.
  4. Disconnect the hose from the diagnostic station pressure regulator.
  5. Using a section of vacuum hose, connect one end onto the EVAP pressure/purge diagnostic station pressure regulator. Connect the other end of the vacuum hose to the canister side of the purge pipe
  6. Connect the other end of the vacuum hose to the canister side of the purge pipe
  7. Turn ON the main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds.
  8. If the nitrogen does not clear the blockage, replace the purge pipe.
  9. Return the EVAP pressure/purge diagnostic station to the station's original condition.
  10. Install a new EVAP canister.
  11. Lower the vehicle.
  12. Install a new EVAP canister purge valve.
  13. Return to the diagnostic table that sent you here.
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