Evaporative Emission System Leak Test

EVAPORATIVE EMISSION SYSTEM LEAK TEST

Evaporative Emission Leak System Tester:

SPECIAL TOOL(S)

CAUTION: The evaporative emission system must not be pressurized to more than 3.48 kPa (14 inches H2O) or damage to the evaporative emission system may occur.

1. Connect the Evaporative Emission System Leak Tester to the evaporative emission test port.
2. For OBD II vehicles, close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure. Canister Vent Solenoid Closing Procedure

For Non-OBD II vehicles, plug the EVAP canister vent or the EVAP canister vent tube.

3. Pressurize the evaporative emissions system to 3.48 kPa (14 inches H2O).
4. Monitor the system for two minutes. The EVAP system fails the leak test if the pressure falls below 2.0 kPa (8 inches H2O).
5. Repair any leaks as necessary.
6. Repeat the Evaporative Emission System Leak Test until the system remains above 2.0 kPa (8 inches H2O) after the two-minute test period.