Evaporative Emission System Leak Test. General Procedures

Activation

1. 1
   Disconnect the quick-connect fitting from the EVAP purge valve vapor tube (engine side).
   Refer to: Quick Connect Fittings (310-00B Fuel System — General Information) — 1.6 L EcoBoost (132 kW/180 L hp) — Sigma, General Procedures.
2. 2
   Connect the VACUTEC Fuel Vapor Smoke Tester to the EVAP purge valve port. Refer to the tester manufacturer's instructions.
3. 3
   Connect the diagnostic tool and command the EVAP purge valve open.
4. 4
   Using the diagnostic tool, command the EVAP canister vent solenoid closed. Refer to the tool manufacturer's instructions.
5. 5
   Using the VACUTEC Smoke Machine fuel evaporative leak tester, pressurize the EVAP system.
6. 6
   Monitor the VACUTEC Smoke Machine fuel evaporative leak tester indicator. If the reading is below the indicator flag, the system passed the leak test and the procedure is complete. If the reading is above the indicator flag, the system failed the leak test. If the leak check fails, proceed to the next step.
7. 7
   Supply smoke from the VACUTEC Smoke Machine fuel evaporative emission tester into the EVAP system. Refer to the manufacturer's instructions.
8. 8
   Use the halogen lamp included with the VACUTEC Smoke Tester to locate smoke leaking from the EVAP system. This will indicate the leak location.
9. 9
   Repair all leaks as necessary.
10. 10
    Repeat the leak test until the system passes.