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Home >> Saturn >> 2004 >> Ion Red Line >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Introduction) >> Repair Instructions >> Evaporative Emission (EVAP) System Cleaning >> Cleaning Procedure
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Cleaning Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the EVAP canister. Refer to Evaporative Emission (EVAP) Canister Replacement .
  3. Turn OFF the main valve on the J 41413  . See Special Tools and Equipment .
  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.
  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 stations original condition.
  10. Install a new EVAP canister. Refer to Evaporative Emission (EVAP) Canister Replacement .
  11. Lower the vehicle.
  12. Install a new EVAP canister purge valve. Refer to Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement .
  13. Return to the diagnostic table that sent you here.
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