FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Evaporative Emission Control Canister: Testing and Inspection

PROCEDURE
1. Disconnect and plug fuel and vapor return tube leading to the Evaporative Emissions (EVAP) canister at the EVAP canister purge valve.
2. Plug evaporative emission tube at the EVAP canister.
3. Using Rotunda Fuel Tank Leak Tester 134-R0003 or equivalent, pressurize the fuel system through the test fuel tank filler cap.
4. Verify that the pressure within the system does not decay.
5. If pressure does decay, determine the cause of the leak, then repair.
6. Remove plugs and reconnect fuel and vapor return tube to the evaporative emission canister purge valve and evaporative emission tube to the EVAP canister.