Fuel Evaporation System: Maintenance
Inspect fuel tank, canister, vacuum relief filler cap, lines and hoses for damage, leaks, and deterioration every 60,000 miles or every 6 years. Replace gasket in vacuum relief filler cap.
To clean charcoal canister filter, remove hoses from canister and apply 43 psi (3 kg/cm2 ) air pressure to the following port:
- Outer vent control valve port on Corolla and Tercel
- Fuel tank port on all other models
Hold other top ports closed. Ensure that no carbon comes out of bottom port of canister.