The Nissan Rogue PCV Valve carries gases that bypass the combustion chamber from the engine crankcase back into the combustion chamber for cleaner operation and internal part protection. Using the pressure difference created by the factory Nissan intake manifold, the PCV Valve remains mostly closed at idle when vacuum is high. It opens wider under acceleration to regulate flow so the air-fuel balance is not disturbed and unwanted vapors are burned. It helps to minimize noxious fumes as well as cut down on the chance of oil sludge build-up. Further, it helps crankcase conditions that can help seal the piston rings while helping with Rogue emissions compliance. The PCV Valve, like a flame arrestor, stops reverse bursts that may push pressure into the crankcase during a backfire. It is recommended to have regular checks conducted because a sticking Nissan PCV Valve allows excess moisture or acids to accumulate while a jammed unit can cause rough running. The compact, spring-loaded Nissan PCV Valve works silently with the other ventilation passages in your Rogue and requires no special service other than periodic inspection. However, it does play an important role in the efficiency and longevity of your Rogue.
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