Working Principle of PCV valve | positive crankcase ventilation | pcv animation

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pcv working animation | pcv | diesel engine pcv | positive crankcase ventilation | pcv working ANIMATION | Ventilation system | animation
The PCV system does this by using manifold vacuum to draw vapors from the crankcase into the intake manifold. Vapor is then carried with the fuel/air mixture into the combustion chambers where it is burned. ... The PCV Valve is effective as both a crankcase ventilation system and as a pollution control device.
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As the PCV valve starts going bad, the performance of your vehicle will get worse. This can be exhibited by a buildup of pressure in the exhaust or the engine could stall out. ... When this happens, the fuel and air mixture is diluted causing your vehicle to run poorly and lean out

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18 авг 2021

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Комментарии : 12

@TheCaioKyleBraga Год назад

It's interesting that many techs don't talk about the PCV especially in high mileage vehicles as it does have a major impact on engine performance from oil consumption to air/fuel mixture.

@gz617 4 месяца назад

I really want to understand how this pcv system applies to oil consumption and how.

@robertjackson7590 3 месяца назад

@@gz617 The valve you see moving can get enough sludge buildup that it can stick halfway through it's travel. If/When this happens the full vacuum from the engine intake manifold(Roughly 20-23inHG Inches of Mercury at Idle) can be strong enough to pull oil out of the engine crankcase. It also works as a Check Valve in that if the engine Backfires from a Lean mixture it takes it's seat to the right and Checks(Blocks) the pressure protecting the Crankcase. This high pressure could blow lip seals and gaskets out on the engine. It can stick in the closed position blocking vacuum to the Crankcase and you'll see your oil turn Black too soon. You might also develop oil leaks. It's very important for the vacuum to pull Blowby gasses from the crankcase. If an engine burns oil past the rings check the dipstick tube with the Manaometer. Some engine brands dropped this system to near 0 vacuum for EPA specs but it no longer did a good job pulling these damaging gases from the crankcase overheating the ring pack causing them to carbon up. If you pull the Dipstick and hook a Manometer(Sensitive low pressure/vacuum gauge) to tube you should see about 1-2inHG at Idle. HIH

@qx4n9e1xp Год назад

Glad I upgraded this in my beanerw

@TheWilferch Год назад

You could label this much more clearly...as the picture is perfect but the labelling is poor. Consider: left side of slide says "To engine"...sometimes labelled "inlet manifold" in later portions of the vid....and right side is labelled, "inlet" side.....so the word "inlet" is on both sides. Also this....the left side is labelled ""outlet" but's actually connected to the air-inlet of the engine. Confusing. Would be much better to simply call the left side "engine air inlet"....and the right side "engine-crankcase" or "screwed-connection to engine"..... just saying.... as this is a good diagram but the wording can be confusing

@81Todd 9 месяцев назад

Hundred percent agree I was watching this in my head was starting to hurt. I was thinking of myself you’re using two different words that mean the same thing on both sides.

@fabdrive4220 3 месяца назад

It’s wrong normally pcv valve start open and it closes as soon the suction grow from the inlet manifold

@MAThomas0912 16 дней назад

I was wondering the same thing. Just changed the pcv on my 2.4 GDI that is consuming oil. Exterior of valve covered in oil heading into the intake manifold. I blew through the valve (new one) and it doesn’t seem like the spring tension is strong enough to close the plunger. But once installed, is there some kind of back pressure from the manifold that forces the plunger closed when gases aren’t escaping? Thanks!