Evaporative Emission System Leak Test
EVAPORATIVE EMISSION SYSTEM LEAK TESTSpecial Tool(s):
Phase 1 - Leak Verification
1. Connect the 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. WARNING: If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to Fire Suppression System.
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. WARNING: If equipped with fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System.
Repeat the leak test until the system passes. If equipped with fire suppression system, repower the system.