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Home >> Pontiac >> 2002 >> Aztek AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Sub-Systems (Gasoline) >> Evaporative Emission System Cleaning >> Cleaning Procedure
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Cleaning Procedure

  1. Remove EVAP canister.
  2. Turn OFF main valve on EVAP Pressure/Purge Diagnostic Station (J 41413).
  3. Disconnect hose from diagnostic station pressure regulator.
  4. Using a section of vacuum hose, connect one end onto diagnostic station pressure regulator.
  5. Connect other end of vacuum hose to canister side of purge pipe.
  6. Turn ON main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds.
  7. If nitrogen does not dislodge carbon particles, replace purge pipe.
  8. Return EVAP pressure/purge diagnostic station to original condition of station.
  9. Install a new EVAP canister.
  10. Connect all previously disconnected EVAP pipe connectors.
  11. Lower vehicle.
  12. Return to appropriate DTC service procedure.
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