Engine Controls - System/Component Tests - 4-CYL CARBURETED: Maintenance: Notes
- 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 outer vent control valve port on Corolla and Tercel, and fuel tank port on Pickup. Hold other top ports closed. Ensure that no carbon comes out of bottom port of canister.