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What does the PCV valve do?

April 26, 2017pcv valve

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What does the PCV valve do?

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The PCV (Positive Crankcase Ventilation) valve (along with the Breather Element) re-circulates unburned gases back into the engine to be re-burned, cutting air pollution. A plugged PCV can cause rough engine idle and many other problems, including engine damage. It is quite important that the PCV value be working properly in your car. The PCV valve should be checked/changed every 30,000 miles.