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Home >> Jeep >> 1989 >> Wrangler Base, 4.2 T, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Emission Control System Description >> Operation >> Evaporative Emission Control

Evaporative Emission Control

All models use closed fuel tank (sealed) system, which returns raw fuel vapors to intake manifold for burning. A carbon canister stores vapors from raw fuel until the engine can running to draw vapors into the combustion chamber to burn.