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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 298 (Evaporative Emissions System) >> General Procedures >> Evaporative Emission System Leak Test >> General Procedure

General Procedure

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Run the Evaporative Emission (EVAP) Test with the scan tool.
  2. NOTE: Some small leaks may not be detected using the Evaporative Emission (EVAP) Test. If the system has passed the test but a leak is still suspected, then proceed to Step 3.

    If the Evaporative Emission (EVAP) system failed the Evaporative Emission (EVAP) Test, then proceed to Step 3.

  3. Disconnect the fuel vapor tube-to-Evaporative Emission (EVAP) canister purge valve quick connect coupling. REFER to QUICK CONNECT COUPLING .
  4. Connect the VACUTEC Smoke Machine Fuel EVAP  Emissions System Tester to the fuel vapor tube quick connect coupling. For additional information, manufacturer's instructions.
  5. NOTE: The battery ground cable was previously disconnected in the fuel vapor tube quick connect coupling procedure.

    Connect the battery ground cable. REFER to BATTERY DISCONNECT for connection procedure.

  6. Close the canister vent solenoid with the scan tool.
  7. NOTE: The supplemental refueling adapter is located in the spare tire compartment.

    Install the supplemental refueling adapter into the Easy Fuel (capless) fuel tank filler pipe assembly.

  8. NOTE: If smoke does not exit the fuel tank filler pipe neck area after the system is pressurized, open the canister vent solenoid with the scan tool to allow the air to purge. Once smoke is seen at the canister vent solenoid, close the canister vent solenoid with the scan tool.

    Introduce smoke from the VACUTEC Smoke Machine Fuel EVAP  Emissions System Tester into the Evaporative Emission (EVAP) system and verify that smoke is exiting the fuel tank filler pipe neck area. For additional information, manufacturer's instructions.

  9. Remove the supplemental refueling adapter once smoke is observed exiting the fuel tank filler pipe neck area.
  10. Continue to enter smoke into the system for 60 seconds to obtain pressure.
  11. Press and release the remote start button in intervals of 15 seconds ON and 15 seconds OFF while checking for exiting smoke.
  12. Use the halogen light provided with the VACUTEC Smoke Machine Fuel EVAP  Emissions System Tester to follow the Evaporative Emission (EVAP) system path and look for smoke exiting at the source of the leak(s).
  13. Repair any leaks as necessary.
  14. Repeat the leak test until the system passes.
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