The Nissan Juke PCV Valve guides crankcase gases that have undergone partial combustion back to the combustion chambers for improved operation and protection of internal components. The PCV Valve prevents the formation of sludge and keeps the oil clean by redirecting blow-by fumes to the intake stream. Inside the system, the intake manifold vacuum acts on the PCV Valve. At idle, where there is a high vacuum, this restricts flow. During acceleration, where there is low vacuum, it opens wider to cope with the increased volume of gases. This variable action prevents crankcase pressure from building up and ensures that the rings maintain their strong compression so that the Nissan Juke can engine efficiently without having to make special periodic adjustments. Located opposite the crankcase breather, the PCV Valve also works as a flame arrester to prevent reverse pressure from entering the crankcase during backfire or turbocharger boost. Cleaning the valve will help the Nissan Juke ventilate as well as have fuel air mixtures and oil mist levels. The PCV Valve may be simple to fit, but it is an essential emission control feature found on every Nissan. It must not only assist in the reliability of the vehicle but also protect the environment. The PCV Valve on every Juke helps do this.
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