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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1431 (Evaporative Emissions System (Except Hybrid)) >> General Procedures >> Evaporative Emission System Leak Test >> Phase 2 - System Leak Check

Phase 2 - System Leak Check

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

2.5L and 3.0L vehicles 

  1. Disconnect the fuel vapor tube-to- EVAP  canister purge valve quick connect coupling. For additional information, refer to QUICK CONNECT COUPLING .
  2. Connect the VACUTEC Smoke Machine Fuel Evaporative Emission System Tester to the fuel vapor tube quick connect coupling. For additional information, refer to the manufacturer's instructions.

3.5L vehicle 

  1. Disconnect the upper vapor tube-to- EVAP  canister purge valve quick connect coupling. For additional information, refer to QUICK CONNECT COUPLING .
  2. Connect the VACUTEC Smoke Machine Fuel Evaporative Emission System Tester to the upper EVAP  canister purge valve fitting. For additional information, refer to the manufacturer's instructions.

All vehicles 

  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING .
  2. Connect the battery ground cable. For additional information, refer to REMOVAL AND INSTALLATION (2.5L), REMOVAL AND INSTALLATION (3.0L) and REMOVAL AND INSTALLATION (3.5L) .
    NOTE: The battery ground cable was previously disconnected in the vapor tube quick connect coupling disconnect procedure.

3.5L vehicle 

  1. Open the EVAP  canister purge valve with the scan tool.
    NOTE: In the scan tool, the EVAP  canister purge valve is referred to as the EVAP  vapor management valve.

All vehicles 

  1. Close the canister vent solenoid with the scan tool.
  2. Install the supplemental refueling adapter into the Easy Fuel™ (capless) fuel tank filler pipe assembly.
    NOTE: The supplemental refueling adapter is located in the luggage compartment.
  3. Introduce smoke from the VACUTEC Smoke Machine Fuel Evaporative Emission System Tester into the EVAP  system and verify that smoke is exiting the fuel tank filler pipe neck area. For additional information, refer to the manufacturer's instructions.
    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.
  4. Remove the supplemental refueling adapter once smoke is observed exiting the fuel tank filler pipe neck area.
  5. Continue to enter smoke into the system for 60 seconds to obtain pressure.
  6. Press and release the remote start button in intervals of 15 seconds ON and 15 seconds OFF while checking for exiting smoke.
  7. Use the halogen light provided with the VACUTEC Smoke Machine Fuel Evaporative Emission System Tester to follow the EVAP  system path and look for smoke exiting at the source of the leak(s).
  8. Repair any leaks as necessary.
  9. Repeat the leak test until the system passes.
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