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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - 4 CYL & V6 >> Emission Systems >> Evaporative Emission Control System >> Vacuum Cut & Vacuum Cut Bypass Valves

Vacuum Cut & Vacuum Cut Bypass Valves

Vacuum cut valve prevents manifold vacuum from reaching fuel tank. Vacuum cut by-pass valve opens only during on-board diagnostic leak and flow checks.