Evaporative Emission System Leak Test

EVAPORATIVE EMISSION SYSTEM LEAK TEST

Special Tool(s):

Special Tool(s)

Phase 1 - Leak Verification
1. Connect the VACUTEC smoke machine leak tester to the evaporative emission (EVAP) test port.
2. Close the canister vent solenoid.
3. Using the smoke machine, pressurize the EVAP system.
4. Monitor the indicator flag on the smoke machine tester. If the measurement is below the indicator flag, the system has passed the leak test and the test procedure is complete. If the measurement is above the indicator flag, the system has failed the leak test. Proceed to Phase 2.

Phase 2 - System Leak Check
1. Introduce smoke from the smoke machine into the EVAP system.
2. Use the halogen light provided with the smoke machine to look for smoke coming from the EVAP system. This would indicate a leak point.
3. Repair any leaks as necessary.
4. Repeat the leak test until the system passes.