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 KZbin 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 !

[@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.

[@virc4541]

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

[@phantasmagorezzyzx]

Great explanation, easy to understand! Thank you!

[@bimalkumar7952]

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

[@jonb4667]

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

[@nahid1981]

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

[@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

[@davidsimmons177]

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

[@waqarahmad9548]

As always, very informative. U r a genius.

[@Stumpy77]

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

[@reiannaidoo]

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

[@francogalloso2167]

Good explanation of how pcv works. Thanks.

[@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.

[@samiuddin6696]

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

[@luislarriu3381]

You do a great job explaining things in detail

[@dogsbyfire]

Very nice drawing. Thank you!

[@MrBow54]

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

[@myRatchets]

Thank you, same to you my friend. Cheers

[@juperrr]

Pretty good explanation. Thank you !

[@passionplanet4471]

Great demonstration😊thanks for the advice and tips

[@pidgeiam4979]

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

[@myRatchets]

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

[@DrBleck35]

You did a great job of explaining this.

[@bravo3541]

Great info, and camera work. Thanks much

[@giveme10feet]

best pcv 🎥 ever! thx man

[@jamessahoye1529]

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

[@sramirez1906]

Very clear explanation. Thanks!

[@michaelmorris6575]

Great teaching! Thanks for sharing!

[@peterscotney1]

Simple and informative , excellent vid

[@ortega181956]

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

[@carslover3509]

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

[@hassanwardeh3458]

. Well done sir , Good explanation, diagram and demonstration

[@foreverwood1963]

Excellent explanation and illustrations

[@Chezilla]

5 Years later, still great info! Thx

[@princesamuel1]

Perfect and straight to the point

[@loi4lifeklite]

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

[@myRatchets]

UnderhooD yw, thanks for watching and commenting. cheers

[@BEEBEE159]

Good job. Thanks for making video.

[@jcstevegigs]

Great explanation!!! Thanks!

[@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

[@scholes6648]

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

[@damon2692]

Very well explained. Thnx.

[@JUrqui]

Thanks for the video ,good diagram

[@Snudur67]

Excellent video!

[@deaglemeagle]

Great info! thanks for the diagram.

[@tradmanmike3360]

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

[@JamesGadbury]

Great stuff, very helpful

[@michaeldemos6816]

Great explanation, thx.

[@hphillips7425]

Interesting and explained well👍

[@hyundaiatoz-kiavisto]

really good information. thanks for sharing.

[@hiramcastillo7137]

Perfect...no body shows it better bless

[@tokgaenz]

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

[@ShadyO-e]

Thanks bro needed this info

[@Mika30041975]

Great explanation. Thx

[@thana7187]

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

[@dungeonsdragons1900]

Great video 👍

[@eliseotaytayon2024]

great explanation

[@Wynn-sm4yq]

Great video 👌

[@tyronemansoor4813]

Good job!

[@andrameda1]

Very theral and clear thanks very much.

[@joshuasingh9720]

U der best bro wel done and god bless u

[@dianasworldoffixingthings4090]

Great Video!

[@GILLEBRATH]

Thanks good to know this information.

[@FungedeBagre]

Thank you for sharing.

[@shaneavalon1392]

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

[@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!

[@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?

[@nahid1981]

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

[@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 :).

[@abdalqadr1]

Smart man thanks for you from Iraq

[@devanwoodruff7289]

Thanks man!!

[@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

[@drudown3285]

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

[@rogerdavis141]

Respect🔩🔧📈 Extremely Helpful thank you

[@David-hy9ni]

Your diagram was well explained

[@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.

[@sardarhaque2262]

Thanx nice Job!

[@tejanaidu5671]

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

[@sunilayya8948]

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

[@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

[@timanderson9466]

Thanks dude!

[@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.

[@ryanmorgan7711]

Thank you dude

[@leslieb.7575]

Good shit exactly what i wanted to know

[@markyisser9004]

good video

[@Sirradal]

excellent

[@jesuisravi]

good job.

[@myRatchets]

+jesuisravi Thanks for watching and commenting, cheers.

[@wavyjayy1350]

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

[@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.

[@irineosahagun1228]

Interesting and Educational video. Furthermore, may I ask if a small piece of pcv grommet which fell inside the port could cause problem in the future?.Many thanks buddy. Have a nice weekend. God Bless.

[@SlikLizrd]

YES. Broken pieces of grommet can cause plugging of oil passages. SOMETIMES, you can suck 'em out with a vacuum cleaner. Good Luck !!

[@meeshobatayeh3413]

Thank you

[@preetdhillon764]

Thanks Sir

[@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?

[@mateoseriosajr1022]

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

[@train4905]

Brill sir thanku.

[@blinkskaterkc]

Thanks good vid. So if the pcv valve is off, would the pressure be able to escape from the crank case? Seems like it would. But I guess oil could escape too. Does the valve protect oil from getting into the intake?

[@myRatchets]

Yes, and thats how it was done back in the day (pre 1960's) they had a hose I believe that just let the crankcase pressure escape into the atmosphere. Now those are pollutants so you cant let them escape into the atmosphere anymore but through the pcv valve they get recycled back through the engine and burned off. The valve is supposed to keep oil from escaping into the intake but some minor amount will get into the intake no matter what.

[@terrywaters6186]

@@MattInIllinois But you're OK with dumping it into the air you breath and onto the highway.

[@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