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 RUclips 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.

[@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!!!

[@davidsimmons177]

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

[@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

[@bimalkumar7952]

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

[@phantasmagorezzyzx]

Great explanation, easy to understand! Thank you!

[@SolidVermillion]

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

[@jimdandy6472]

Good explanation, diagram and demonstration.

[@ll-yj6rh]

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

[@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.

[@luislarriu3381]

You do a great job explaining things in detail

[@francogalloso2167]

Good explanation of how pcv works. Thanks.

[@samiuddin6696]

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

[@reiannaidoo]

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

[@dogsbyfire]

Very nice drawing. Thank you!

[@Stumpy77]

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

[@waqarahmad9548]

As always, very informative. U r a genius.

[@Chezilla]

5 Years later, still great info! Thx

[@nahid1981]

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

[@pidgeiam4979]

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

[@myRatchets]

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

[@MrBow54]

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

[@myRatchets]

Thank you, same to you my friend. Cheers

[@DrBleck35]

You did a great job of explaining this.

[@bravo3541]

Great info, and camera work. Thanks much

[@passionplanet4471]

Great demonstration😊thanks for the advice and tips

[@juperrr]

Pretty good explanation. Thank you !

[@giveme10feet]

best pcv 🎥 ever! thx man

[@princesamuel1]

Perfect and straight to the point

[@ortega181956]

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

[@foreverwood1963]

Excellent explanation and illustrations

[@michaelmorris6575]

Great teaching! Thanks for sharing!

[@sramirez1906]

Very clear explanation. Thanks!

[@jamessahoye1529]

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

[@peterscotney1]

Simple and informative , excellent vid

[@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!

[@carslover3509]

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

[@jcstevegigs]

Great explanation!!! Thanks!

[@BEEBEE159]

Good job. Thanks for making video.

[@hassanwardeh3458]

. Well done sir , Good explanation, diagram and demonstration

[@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

[@scholes6648]

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

[@damon2692]

Very well explained. Thnx.

[@hyundaiatoz-kiavisto]

really good information. thanks for sharing.

[@loi4lifeklite]

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

[@myRatchets]

UnderhooD yw, thanks for watching and commenting. cheers

[@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

[@tokgaenz]

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

[@hiramcastillo7137]

Perfect...no body shows it better bless

[@tradmanmike3360]

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

[@deaglemeagle]

Great info! thanks for the diagram.

[@Snudur67]

Excellent video!

[@michaeldemos6816]

Great explanation, thx.

[@drudown3285]

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

[@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?

[@hphillips7425]

Interesting and explained well👍

[@ShadyO-e]

Thanks bro needed this info

[@eliseotaytayon2024]

great explanation

[@thana7187]

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

[@JUrqui]

Thanks for the video ,good diagram

[@nahid1981]

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

[@JamesGadbury]

Great stuff, very helpful

[@shaneavalon1392]

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

[@FungedeBagre]

Thank you for sharing.

[@Mika30041975]

Great explanation. Thx

[@andrameda1]

Very theral and clear thanks very much.

[@David-hy9ni]

Your diagram was well explained

[@dungeonsdragons1900]

Great video 👍

[@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.

[@sunilayya8948]

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

[@GILLEBRATH]

Thanks good to know this information.

[@dianasworldoffixingthings4090]

Great Video!

[@tejanaidu5671]

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

[@Wynn-sm4yq]

Great video 👌

[@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.

[@nhubui7976]

thanks very detail how it is work

[@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

[@abdalqadr1]

Smart man thanks for you from Iraq

[@rogerdavis141]

Respect🔩🔧📈 Extremely Helpful thank you

[@wavyjayy1350]

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

[@tyronemansoor4813]

Good job!

[@devanwoodruff7289]

Thanks man!!

[@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.

[@joshuasingh9720]

U der best bro wel done and god bless u

[@timanderson9466]

Thanks dude!

[@sardarhaque2262]

Thanx nice Job!

[@mateoseriosajr1022]

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

[@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 :).

[@ryanmorgan7711]

Thank you dude

[@AstroVanTribe]

I just di the PCV valve in my '04 Astro van - The existing PCV valve tested fine BUT, when applying brake pressure when the vehicle was in gear it rattled wildly and was loud so I decided to replace it anyhow ($2.85) it seems to have solved my issue

[@leslieb.7575]

Good shit exactly what i wanted to know

[@Sirradal]

excellent

[@markyisser9004]

good video

[@rrazvanell]

To fully understand....the breather tube supplies air from the filter box to intake manifold? Because, when throttling the engine doesn't it create a vacuum at the end of the tube where is connected to the filter box ?

[@cRiSpIn3F]

Ok I have 73 el Camino with 350 and every time I hook up the pcv valve it runs high in idle than when I plug it it runs fine. (What up with the pcv valve when I test it it make a hissing noise)

[@Forged_Garage]

Is it possible to relocate or add an extension where the pcv valve is installed? Because i have a 2009 toyota rav4 2ar-fe engine, and the pcv valve is located underneath the intake manifold, so to access it i need to remove the intake manifold first, alternative way is to lift it remove the passenger side front tire and splash guard to painfully access it, do you think by putting a extension hose will make any issue?

[@dannyyarbrough915]

Thanks for posting if my Jeep is smoking a little and it's because of a bad pcv valve and I change it will the car stop smoking or is that from the calender, piston ring damage caused by the faulty pcv valve

[@tnamen1307]

Sir also check for the same at 6.20, the valve is sucking, but the hissing sound is still coming from the pcv valve.

[@meeshobatayeh3413]

Thank you

[@joesmith-fi1sx]

hi there, i have a 2000 dodge dakota v6 , my pcv valve is hosed to the rear airbox on top of the throttle body , I have seen other same engine dakotas where it is hosed to a port on the side of the manifold , on my engine that port is capped of with a rubber cap . I am confused and am planning on replacing the valve and want to do it right .