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No matter the type of vehicle you drive and whether it has a gas or diesel engine, it has some sort of positive crankcase ventilation system.

The Positive Crankcase Ventilation (PCV) valve hose is a hose running from the valve cover on the engine to either the intake air box or the intake manifold.

The positive crankcase ventilation (PCV) valve is incorporated into current production engines to aid in improving emissions.

Your car’s engine operates by mixing air with fuel and then burning it.

Your car’s engine requires both air and gasoline in order to operate.

The positive crankcase ventilation (PCV) valve works to evacuate gas from the crankcase of the engine.