Like the exhaust manifold, the positive crankcase ventilation (PCV) valve is an important part of your vehicle's exhaust system. So how does the PCV valve work? Engine operations usually generate a considerable amount of high-pressure combustion gases. Piston rings prevent these gases from leaking into the crankcase. These vapors contain moisture, combustion by-products, and unburned fuel vapors. To prevent these gases from building up sludge in the crankcase, the PCV valve draws and directs them into the intake manifold. The intake manifold then allows these gases to be re-burned in the engine's cylinders. Given their functions, PCV valves are usually designed to withstand high pressure and temperature. But just like other exhaust components, the PCV valve will periodically wear out. Good thing, you can easily and conveniently get the best replacement by shopping here at Auto Parts Deal.
• Keeps combustion gases from accumulating in the crankcase
• Prevents moisture that can cause sludge buildup
• Reduces harmful exhaust emissions
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