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PCV stands for POSITIVE CRANKCASE VENTILATION When the engine is running it builds pressure inside of the engine and if the pressure is not released then it will blow out the engine oil gaskets and leak oil.

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โˆ™ 2011-03-26 17:46:23
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Q: What is the meaning of PCV system in an engine?
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Where is the PCV valve located on 1990 Celica GT?

No PCV valve on this engine. Has "PCV system". Hose from valve cover to throttle body. Nothing to replace.


Why is oil blowing back out of your throttlebody?

Faulty PCV system or engine blow-by.


What is PCV valve?

A PCV valve is a valve (or fixed orifice metering device) which adjusts airflow through the PCV system to allow PCV operation without adversely affection fuel metering. The PCV system moves air from the air cleaner through the crankcase, then into the engine intake. The function of the PCV system is to mix fresh air with contaminated air in the crankcase (contaminated by blowby gasses as partially burned exhaust slips past the piston rings) to then burn off the contaminants during normal combustion inside the engine. The purpose of the PCV system is to protect the oil from degradation, sludging, and acidity caused by exposure to blowby gases without venting it to the atmosphere (polluting.) Such damage to the engine oil would tend to shorten engine life.


Why would there be oil in the airbox on a 1991 Caprice?

The PCV system is not pulling in fresh air to the engine.


How much air flows through the PCV system when the engine is at idle speed?

Up to 30%


Where can you find the pcv valve on a 2005 dodge magnum 2.7?

These cars have a non serviceable pcv valve system, meaning the dealer does not list a part to be serviced or replaced.


Where is the PCV valve on a 98 s10?

There is no PCV valve on the 2.2 Liter engine.


What are the common causes why engine blow by?

High mileage, worn out piston rings, pcv system not functioning properly,


Why does engine dip stick pop out while engine is running?

I believe that is caused by a plugged PCV valve or PCV hose


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Could be, A very high mileage/worn out engine, The PCV system not in working order,


What is used To allow pressurized gases To To vent from the crankcase?

Draft tube or pcv system.Draft tube or pcv system.


Why is your 84 fiero shooting the dipstick out?

Your engine has one of two things happening.The PCV breather system is pluggedThere is a serious internal problem inside the engine.

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