How Does a PCV System Work - Also Testing and Inspection of the PCV Valve

Here is a video on how the PCV system works on your car and also testing and inspecting procedure of the Valve and system components.
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Please Consider Supporting My Channel at : / rnwdue to factors beyond the control of Ratchetsand Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchetsand Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchetsand Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchetsand Wrenches.

[@vijayam1]

Probably one of the best explanations in TH-cam mentioning why PCV always has to be used with a breather tube, that clears most of my doubts. Great video brother!

[@MR-nl8xr]

The part where he mentioned how the pressure from the Crankcase travels through the Oil Way Tubes (that normally run from the Valve Head section down back to the Crankcase base/Reservoir to get resent back to the Oil Pan) up into the Valve Head section is what did it for me.
Never understood what a PCV is doing on top of the engine head if the Crankcase is down below.

[@pnswg01]

Great video. Explained well. I like the fact that you explain with the diagrams and then show a real example. Very clear and understandable. Keep up the good work.

[@timanderson9466]

PS: This is how videos should be produced. Straight to the point and informative.

[@bradford_shaun_murray]

1990s cable tv style.

[@juperrr]

@@bradford_shaun_murray Exactly dude.

[@davidsimmons177]

Dude almost has a million subs and uses a 2x4 to hold hood I love it haha

[@spelunkerd]

The PCV is one of those little marvels of universally adopted engineering. The simple appearance belies underlying complexity! No vacuum - closed to prevent backfire induced retrograde flow, high vacuum - minimal flow (at idle when you don't want a big swing of crankcase pressure), low vacuum - high flow when at wide open throttle the engine can easily take in extra blowby gas. Great practical summary!

[@cedricthompson4602]

spelunkerd o8u8o8k6

[@afundou]

and why bad working makes engine pipe smoking?

[@ironfistarrival]

Does Nice Blow Jobs , i guess !

[@virc4541]

Thank you!! is a real good information for inspect and change the PCV Valve..greetings from Guatemala City!!!

[@bimalkumar7952]

First time I learn from you about PCV valve ...thanks

[@phantasmagorezzyzx]

Great explanation, easy to understand! Thank you!

[@jimdandy6472]

Good explanation, diagram and demonstration.

[@ll-yj6rh]

What happens if there's oil in the air filter box tube before throttle body

[@chocolate_squiggle]

Just ruddy excellent. Dude thank you so so much. I've been watching more of your videos just in the last week, you have quite a gift for knowledge transfer. Not everyone is able to do that effectively. That diagram and the way you explained it really helped me understand PCV properly. I vaguely knew it was pressure equalisation but I struggled with how and why oil could traverse all the way up to the airbox, or an intake manifold - I've seen both. I see now it's not really being drawn all that way directly, it's just oil that was _already_ in the upper area doing normal stuff, and getting through PCV or breather hoses.
I've done quite some work on my car this week, have more to do and I knew checking the PCV would be part of it. I just wasn't really sure why.

[@jonb4667]

Thank you for explaining how the pcv system works. Now i really understand how the direction flows. Big Thank You

[@SolidVermillion]

Thanks so much for clearing all of that up. Nice touch adding testing procedures as well.

[@RC-Heli835]

Thanks for all your helpful videos man. I think if they rattle they can still be bad. Someone told me you you should only be able to blow one way through the valve which lets you know that the valve actually does have enough spring tension to hold it closed.

[@waqarahmad9548]

As always, very informative. U r a genius.

[@francogalloso2167]

Good explanation of how pcv works. Thanks.

[@luislarriu3381]

You do a great job explaining things in detail

[@Stumpy77]

Great video bro - no messing around, clear explanation and valuable info.

[@nahid1981]

best explanation so far I found about pcv...thanks. Keep up the good work.

[@dogsbyfire]

Very nice drawing. Thank you!

[@reiannaidoo]

I just love your videos. Keep up the good work, you're doing so well.

[@Chezilla]

5 Years later, still great info! Thx

[@samiuddin6696]

Excellent experiment for how to check PCV for its function. Jazakallah-o-Khair in this world

[@giveme10feet]

best pcv 🎥 ever! thx man

[@DrBleck35]

You did a great job of explaining this.

[@MrBow54]

As always great video
The best to you on this holiday season

[@myRatchets]

Thank you, same to you my friend. Cheers

[@princesamuel1]

Perfect and straight to the point

[@pidgeiam4979]

Great explanation. Very clear and understandable. Thanks very much, Pidge.

[@myRatchets]

+PiDGE IAM np, glad you liked the video. cheers

[@bravo3541]

Great info, and camera work. Thanks much

[@juperrr]

Pretty good explanation. Thank you !

[@passionplanet4471]

Great demonstration😊thanks for the advice and tips

[@michaelmorris6575]

Great teaching! Thanks for sharing!

[@sramirez1906]

Very clear explanation. Thanks!

[@foreverwood1963]

Excellent explanation and illustrations

[@peterscotney1]

Simple and informative , excellent vid

[@jcstevegigs]

Great explanation!!! Thanks!

[@jamessahoye1529]

you really explain things good ..keep it up brother.

[@BEEBEE159]

Good job. Thanks for making video.

[@Snudur67]

Excellent video!

[@ortega181956]

great info. job well done explaining the pvc valve operation and texting. Thanks

[@hiramcastillo7137]

Perfect...no body shows it better bless

[@scholes6648]

Very imformative...well done......... Kudos

[@carslover3509]

very great information thanks friend ... keep the great work

[@damon2692]

Very well explained. Thnx.

[@JamesGadbury]

Great stuff, very helpful

[@abacus091]

good job Bro, please continue work hard, eastern Europe fans watching you

[@myRatchets]

abacus091 Awesome, we just getting warmed up. Great to hear I have fans around the world. :)

[@planet1250]

RatchetsAnd Wrenches I have watched all of your videos.
A fan from Italy

[@hassanwardeh3458]

. Well done sir , Good explanation, diagram and demonstration

[@Mika30041975]

Great explanation. Thx

[@JUrqui]

Thanks for the video ,good diagram

[@michaeldemos6816]

Great explanation, thx.

[@hyundaiatoz-kiavisto]

really good information. thanks for sharing.

[@deaglemeagle]

Great info! thanks for the diagram.

[@eliseotaytayon2024]

great explanation

[@ShadyO-e]

Thanks bro needed this info

[@dianasworldoffixingthings4090]

Great Video!

[@tradmanmike3360]

GREAT VIDEO! GREAT NARRATIVE WORK. NEW SUB. THUMBS UP!!!

[@hphillips7425]

Interesting and explained well👍

[@loi4lifeklite]

Hi!! Thank you for your hard work, very good video... God bless.

[@myRatchets]

UnderhooD yw, thanks for watching and commenting. cheers

[@fidelcatsro6948]

thank you senyor, by watching this video I learnt a lot of mysteries about the 4 darn odd looking pipeline from the cylinder blocks to a metal square contraption above which has an air suction hose from the carbs and another large hose to the breather box on my Suzuki bandit bike, it was a mystery all these 7 years and at least I know some of the basics now, especially that ticking noise when I throttle and its cause! you reckon I can get more ponies out the bike if I dead flange them up completely? never seen that odd pipe in older bikes anyway

[@FungedeBagre]

Thank you for sharing.

[@andrameda1]

Very theral and clear thanks very much.

[@riblets1968]

Just the information I was looking for! I understand the basic principles involved but I didn't what constituted valid testing. Thank you very much, sir!

[@nahid1981]

They way you say "hey whats up there.." sounds like you are high...lol... Love your all vids. Thanks for explaining

[@tyronemansoor4813]

Good job!

[@dungeonsdragons1900]

Great video 👍

[@abdalqadr1]

Smart man thanks for you from Iraq

[@tejanaidu5671]

Thank you I will try it and will share...

[@GILLEBRATH]

Thanks good to know this information.

[@tokgaenz]

thank i like all your educational video , i learn many from it , i fix my good car and make it not working

[@David-hy9ni]

Your diagram was well explained

[@thana7187]

Thank you very much, I like this video. :)

[@nhubui7976]

thanks very detail how it is work

[@Wynn-sm4yq]

Great video 👌

[@joshuasingh9720]

U der best bro wel done and god bless u

[@drudown3285]

Just changed mine. The old one had no rattle and no bounce inside. Glad I changed it!

[@shaneavalon1392]

Very helpful info as usual.. quick question.. does a faulty pcv valve cause increase fuel consumption.??

[@timanderson9466]

Thanks dude!

[@tyronewalker5764]

Well done sir.

[@myRatchets]

+Tyrone Walker ty ty

[@tyronewalker5764]

Just pulled out mine from my 4.7 V8 Dodge Dakota. What a mess, full of oil and gunk!

[@shamwaymoonyos9578]

Yep same. Liked and subscribed :).

[@TravisHeinze]

6:00 Is that the common way to vacuu test the valve, with your finger? I have a Ford Focus that I want to test the pressure with.

[@devanwoodruff7289]

Thanks man!!

[@ryanmorgan7711]

Thank you dude

[@denospyridon3126]

Thanks for explaining plus showing a Toyota Camry cause I have a 2004 2.4 4 cylinder and changed mine and now the car gets what it was originally intended to get the mileage 24 city and 30 hyw. Thanks

[@ashleynaidoo6907]

Hi There,
Thank you for the awesome videos. You have definitely improved my car/engine knowledge.
I drive a volkswagen 1.8T polo gti 9N3.
On idle, if I remove the oil cap, should I feel a vacuum?

[@rogerdavis141]

Respect🔩🔧📈 Extremely Helpful thank you

[@sardarhaque2262]

Thanx nice Job!

[@RichardFanders]

When you open the throttle body there is no vacuum after the throttle body, there is actually positive pressure sometimes. There can be a vacuum before the throttle body at WOT hence why there is a breather before and after.

[@sunilayya8948]

Best explanation i have seen on this topic . Can you suggest a pcv valve replacement interval for a gdi turbo engine. Thanks.

[@ralphpittman6361]

Awesome video!! I’m actually running into some oil pressure issues. Decided to test my pcv valve just like in the video but the car did not want to start. Any reason why??? Any help would be greatly appreciated.

[@Sirradal]

excellent

[@leslieb.7575]

Good shit exactly what i wanted to know

[@daby8399]

Thank you

[@wavyjayy1350]

great vid, so if the valve is sucking where you were putting your finger then it should be good?

[@mateoseriosajr1022]

Its normal if u see some oil in the hose when you remove it from the pcv valve?

[@markyisser9004]

good video

[@kiokom2]

thank you.

[@crbourret]

Is it possible for the valve to get stuck open? And if so would it cause increased oil consumption?

[@ninemimesleft]

Also, would it still have suction if it's stuck open?

[@preetdhillon764]

Thanks Sir

[@garyr7027]

Well there is a little bit more to it. At idle when manifold pressures are high/"high vacuum," and low crankcase pressure pushing on one side of the valve, and suction on the other side of the valve, the valve will remain in the closed position. As throttle opens, manifold pressures drop opening the valve, relieving crankcase pressure. At idle a pcv valve should be closed, otherwise a vacuum leak is created, dropping manifold pressures, decreasing the valves ability to close. At idle a engine, unless it's wore out, doesn't really require crankcase pressures to be relieved, only at part or wide open throttle, for it is then the crankcase pressures build.

[@vasmajority45]

Could you explain how the blinker fluid works

[@gdzeek]

hold the bottle above your head, hold your eye open and slowly squeeze on the bottle while holding it just above your eye

[@MidwestDIY]

@@gdzeek I tried and it worked

[@gdzeek]

@@MidwestDIY contact lense users rejoice!

[@r.s.customz1502]

Ask a blonde chick driving while texting lol

[@jesuisravi]

good job.

[@myRatchets]

+jesuisravi Thanks for watching and commenting, cheers.

[@musicmancecuador]

Thanks