Engine Controls - System/Component Tests: Maintenance

1. 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.
2. To clean charcoal canister filter, remove hoses from canister and apply 43 psi (3 kg/cm² ) air pressure to fuel tank port. Hold other top ports closed. Ensure that no carbon comes out of bottom port of canister.

Fig 1: 2WD (4A-GE) Evaporative Emission Control Components & Operating Parameters

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Fig 2: 4WD (4A-FE) Evaporative Emission Control Components & Operating Parameters

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002