Why change pcv

Your engine is powered by the energy created by exploded fuel, but some of the vapors from the explosions escape into the lower part of the engine, which is called the crankcase. The crankcase is where your engine oil hangs out. If the gases were allowed to stay in the crankcase, they would quickly contaminate the oil and turn it to sludge. Sludge is one of the biggest enemies of your engine, clogging it up, eventually leading to expensive failures.

Also, the pressure build up would cause seals and gaskets to blow out. Therefore, these gases need to be vented out. Gasoline engines used to simply have a hose that let the poisonous fumes vent out into the air. In , the federal government required gas engines to have a special one-way valve installed to help reduce dangerous emissions.

Diesel engines are not required to have these valves. The same contaminates that damage your oil, also affect the PCV system. So, as you can see, replacing your PCV valve is, more important than you think. But, over time, oil breaks down and becomes contaminated with dust; dirt and debris from the engine, as well as the environment. Engine oil sludge, is actually the thickening and breaking down of your engine oil. Another problem, is a lack of air flow, to carry vapors from the crankcase.

Because, without air flow, […]. So, before replacing any of these sensors; you must first find the real problem that pushed you […]. Most of the images displayed are of unknown origin. Most of those gases are routed out of the engine, through the exhaust and then out the muffler.

Traces of oil and gasoline must be re-burned in order to reduce emissions and improve fuel economy. This is where your positive crankcase ventilation PCV valve comes in.

Dirty oil is. This will contaminate the PCV valve and clog it, forcing you to change it more frequently. It lasts as long as it lasts. Regular maintenance will help provide a longer use life, while neglecting your regular oil changes will shorten it. Ideally, the PCV valve should be changed with every major scheduled service 30, 60, 90K, etc. Watch for the following:. This article originally appeared on YourMechanic. Autoblog is partnering with YourMechanic to bring many of the repair and maintenance services you need right to you.

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