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A PCV valve, or Positive Crankshaft Ventilation valve, is a component of an internal combustion engine that recirculates the air and gasoline which has slipped by the piston uncombusted, collecting in the crankcase. More »

Replace the PVC valve on a vehicle by locating the valve and pulling it out with needle nose pliers. Put in the new valve by attaching it to the hose and snapping it into place. More »

To find the positive crankcase ventilation, or PCV, valve, open the hood of your car, and locate the crankcase. Find the fuel-intake manifold on the engine, and look for a black tube that connects it to the crankcase. Pu... More »

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To find the positive crankcase ventilation, or PCV, valve, open the hood of your car, and locate the crankcase. Find the fuel-intake manifold on the engine, and look for a black tube that connects it to the crankcase. Pu... More »

When a positive crankcase ventilation, or PCV, valve goes bad, the valve may be plugged and can cause sludge to build in the engine, as well as oil leaks. A PCV valve can also go bad when there is water inside of it caus... More »

Replace the PVC valve on a vehicle by locating the valve and pulling it out with needle nose pliers. Put in the new valve by attaching it to the hose and snapping it into place. More »

Flex-fuel technology refers to a type of vehicle that has an internal combustion engine that can run on either gasoline or up to E85 gasoline-ethanol blend. A sensor in the fuel system measures the ethanol content in the... More »