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Home › Saturn › 2003 › L300 › Repair and Diagnosis › Engine Performance › System › Engine Controls - System & Component Testing › Emission Systems & Sub-Systems › Evaporative Emission System Cleaning › Cleaning Procedure

Cleaning Procedure

  1. Raise the vehicle.
  2. Remove the EVAP canister.
  3. Turn OFF the main valve on the Evaporative Emissions System Tester (EEST).
  4. Disconnect the hose from the diagnostic station pressure regulator.
  5. Using a section of vacuum hose, connect one end onto the EEST 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 dislodge the carbon particles, replace the purge pipe.
  9. Return the EEST to the original condition of the station.
  10. Install a new EVAP canister.
  11. Lower the vehicle.
  12. Install a new EVAP canister purge valve.
  13. Return to diagnostic procedure.
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