EVAP System Leak Test

Evaporative Emission System Tester:

New Generation Star (NGS) Tester:

Special Tools Desired

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. Using the New Generation Star (NGS) Tester, apply 12 volts to the canister vent solenoid.

NOTE: The ignition switch must be in the key ON and engine OFF position.

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