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Home >> Volvo >> 2008 >> S40 Base, 2.4 39, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Miscellaneous - Design And Function (544 Body) >> Engine (B5244S4; 2004-2010) >> Function >> Crankcase Ventilation
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Crankcase Ventilation

The crankcase ventilation controls the pressure in the crankcase. The crankcase gases are also separated in the flame trap and cyclone separators and favorable particles are returned to the engine.