Evaporative Emissions System: Testing and Inspection

Evaporative Emission System Leak Test





1. With the vehicle in NEUTRAL, position it on a hoist.

2. Disconnect the natural vacuum leak detection module hose from the carbon canister.





3. Connect the VACUTEC Smoke Machine Fuel EVAP (Evaporative Emission) Emissions System Tester to the carbon canister port, use a suitable adapter hose. For additional information refer to the manufacturer's instructions.





4. NOTE: The supplemental refueling adapter is located in the luggage compartment.
Install the supplemental refueling adapter into the Easy FuelTM (capless) fuel tank filler pipe assembly.


5. NOTE: Direct smoke to the carbon canister port only. Smoke directed towards the natural vacuum leak detection module or filter may cause damage and/or restrict vapor lines
Introduce smoke from the VACUTEC Smoke Machine Fuel EVAP (Evaporative Emission) Emissions System Tester into the EVAP (Evaporative Emission) system and verify that smoke is exiting the fuel tank filler pipe neck area. For additional information, refer to the manufacturer's instructions.


6. Remove the supplemental refueling adapter once smoke is observed exiting the fuel tank filler pipe neck area.

7. Continue to enter smoke into the system for 60 seconds to obtain pressure.

8. Press and release the remote start button in intervals of 15 seconds ON and 15 seconds OFF while checking for exiting smoke.

9. Use the halogen light provided with the VACUTEC Smoke Machine Fuel EVAP (Evaporative Emission) Emissions System Tester to follow the EVAP (Evaporative Emission) system path and look for smoke exiting at the source of the leak(s).

10. If smoke is observed at:
- the capless fuel fill insert, clean capless insert (per SSM 21018). If leak persists, replace the fuel filler pipe assembly.

- a vapor tube joint, disconnect and reconnect the components. If leak persists, replace both components that make up the joint.


11. NOTE: If the vehicle fails the IDS leak verification test but a leak cannot be found using the smoke machine, replace the natural vacuum leak detection module and fresh air hose assemblies.
After smoke testing is completed, reconnect the natural vacuum leak detection module vapor hose to the carbon canister.






12. Re-run the IDS leak verification test to confirm the source of the leak has been corrected.