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How To Replace Your Car's PCV Valve (And Why You Might Want To Every 4-5 Years)
One such vital part that helps deal with gas that finds its way into the crankcase is the PCV valve — or positive crankcase ventilation ... the engine diagram inside the engine bay can clue ...
Cars8y
PCV Valve
The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...