The Positive Crankcase Ventilation valve, better known as the PCV valve, is associated with the crankcase ventilation system. After the internal combustion process in the engine occurs, there are exhaust gases created which get redirected into the exhaust system by an exhaust valve.
Looking for a good online repair manual? Click Here for the 5 best options. While in the exhaust system, the catalytic converter converts these toxic exhaust gases into less toxic gases. The gases are then released out of the tailpipe and into the outside air. However, the catalytic converter is not able to convert all of the exhaust gases that are produced from combustion.
There are always going to be a small percentage of toxic fumes which seep out of the internal combustion chamber because of a minor pressure leak. These gases will flow toward the engine block aka the crankcase and end up in the middle of the cylinder wall and piston rings.
If these gases were to remain in your engine block, it would create too much pressure there and ultimate cause your engine to get damaged. The PCV valve is the component that prevents these toxic gases from staying in your engine block. The engine valve cover is where the PCV valve is located. This prevents the crankcase from developing engine-damaging oil sludge. Unlike changing your battery or oil, there is no set time frame to replace your PCV valve. Over time, however, the gases flowing through your PCV valve leave traces of oil that can clog it up.
Be sure to look out for symptoms of a damaged PCV valve, including:. You can typically find it attached on a valve cover at the end of a hose or tube in your engine. If you shake your PCV valve and hear the metallic rattling noise of it opening and closing, it is likely working well.
This extends not only the life of your oil, but the engine as well. The PCV relieves pressure in the crankcase, preventing oil leaks. Eventually, the PCV valve can get gummed up. Then it can not move enough air through the engine to keep it working efficiently. If the PCV valve is sticking enough, you could have oil leaks, excess oil consumption and a fouled intake system.
If you experience hesitation or surging or an oil leak, it may be a sign of PCV value problems. Many PCV system problems can be diagnosed with a visual inspection. Click on the icon for your Adblocker in your browser. A drop down menu will appear. Select the option to run ads for autoblog. The exact text will differ depending on the actual application you have running.
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