VW TSI Warning - Faulty PCV Valve

A faulty PCV (Positive Crankcase Ventilation) can lead to a massive vacuum leak and/or blow the rear main seal causing serious cost to replace.
#shorts #motorcarnut

[@easttorontotv6310]

literally got this fixed today for my 2013 vw cc lol and its nice to see this video cuse i had a feeling driving it to long and far something else would mess up and luckily i got there in time

[@Motorcarnut]

Awesome! You dodged to bullet, lol!

[@brandypresley1869]

And i took the bullet on my 2012 volkswagon cc 2.0 turbo. I had white smoke like crazy didnt know it was this til to late. Blew out my rear main

[@kyleabordotv713]

@@brandypresley1869how much did that cost you to fix it?

[@onurgns]

Tsi engine , change Pcv every 80k miles and place and oil catch can . It would last forever

[@Motorcarnut]

They do have timing tensioner issues which is a big problem regardless of maintenance

[@bm_wuratli6883]

oil catch is a joke there no pressure that why oem is the best reason to stay on oem kardesim

[@bm_wuratli6883]

@@Motorcarnut should i take oem vw or aftermarket alot ppl don't buy afetrmarket because fail cheap material?...

[@Motorcarnut]

@bm_wuratli6883 OEM is always better

[@Motorcarnut]

OEM is always best.

[@brandypresley1869]

Mine did just this!! Blew.out my rear main seal to bad i didnt know this ahead of time uughhh

[@Motorcarnut]

Oh man, wish you saw this vid sooner.

[@eoghanhennessy443]

If you remove your oil cap and the oil is spitting out the oil cap while running the pcv is faulty should be a good suck on it

[@Motorcarnut]

It’s really hard to tell that way if you’re not familiar with cars

[@djole211190]

Someone says that you should have vacuum on that hole, someone says that you should feel air blowing through that hole. Can someone elaborate what is true?

[@Motorcarnut]

No vacuum from that hole, there is a diaphragm in there that holds vacuum if it’s ripped you will feel vacuum and that will indicate PCV valve is bad.

[@tedjohnson64]

Great PCV failure video, but I’m a bit confused: where is the little hole to test for vacuum? Is it the round section of plastic with the black circle around it, on the right side of your pointer finger?

[@Motorcarnut]

Yes

[@sweetandsour6521]

Very interesting what if you just replace the little diaphragm they sell them separately they pop on and off like a bottle cap

[@Motorcarnut]

You can try but sometimes other things fail on that PCV system and they are pretty cheap aftermarket

[@bobsacamano1274]

Should the whole unit be replaced or just the diaphragm?

[@Motorcarnut]

I would replace the whole unit because more than the diaphragm can fail and you can get these pretty inexpensive on Amazon or Ebay for more peace of mind.

[@user-ew7jv6tn3k]

thanks

[@Motorcarnut]

No problem

[@Safetyguy56]

Thanks for the info - I went straight outside and checked it on my 2010 Tiguan - all good - no vacuum pull from that port - cheers - any chance of a transmission removal and rear seal video - 6 speed automatic ? - have you looked at 034 Sports rear seal - looks awesome over the factory seal - maybe even a lifetime fix 😂

[@Motorcarnut]

Thanks for the comment! Yes that seal is the way to go for a permanent repair. Funny I just did a rear main seal but didn’t do a video. I have bolt engine and transmission out of the vehicle right now. I always get these cars and suv’s so I’ll try to make one soon.

[@Whivory]

Could this cause oil to leak into the ignition coil? Just changed my plugs, and the only one with any oil was #4, under the pcv valve. 2010 vw tiguan 2.0 tsi engine.

[@Motorcarnut]

No, sounds like the camshaft cover spark plugs holes are leaking and has to be resealed.

[@JustDavid132]

so i just did mine but every couple of seconds i can feel a bit of air being pushed out is that normal its not trying to suck my finger on the hole but i can feel a slight bit of air being pushed out also is it normal to have oil in the pipe going to the intake

[@Motorcarnut]

No, it’s not supposed to have any air coming out of that hole. And sight oil is normal

[@Ponskippa]

Is oil consumption a tell tale sign?

[@Motorcarnut]

It's one of them, yes.

[@mcclenty7]

What if you replace it but it's still pulling air??

[@Motorcarnut]

What is pulling air? the new PCV valve? or is it still pulling to much vacuum?

[@djsanse031]

Hi! Would a faulty pcv valve on this car cause high oil consumption? No blue smoke from the exhaust…

[@Motorcarnut]

Absolutely

[@djsanse031]

Okay, i will try to change it, i thought there should be coming a lot of blue smoke from the exhaust.. The funny thing that the pcv isnt making any noise or something like that

[@cristhianguerrero9254]

I have the same problem the oil disappears

[@jeffp7368]

Will it throw a code if it’s bad?

[@Motorcarnut]

Yes, a lot of different codes as well.

[@darylorage]

I have terrible oil consumption, with no obvious leaks. No vacuum noticed on pcv valve. How likely is it that pcv valve is bad without vacuum?

[@Motorcarnut]

I’d say 50/50. The piston rings could be the cause, these direct injection engines get very carbon build up if not properly maintained.

[@darylorage]

@@Motorcarnut no smoke, though

[@Motorcarnut]

It has to be going somewhere? If there are no leaks

[@PermatragoGamer69]

Hey boss. I got a 2018 TSI Jetta 1.4 and when i pull the oil stick i can feel a little vacuum, just the same when i open the oil cap. Should i change the valve?

[@Motorcarnut]

That little bit of vacuum is normal

[@PermatragoGamer69]

@@Motorcarnut Thanks!

[@Motorcarnut]

No problem

[@ZsoltBirtok]

szia 2017 vw 1.4 Tsi jetta ugyan ez gond

[@onurgns]

Replace Pcv valve by 80 k milesS also recommend to add oil catch can

[@Matan2222222]

Can I drive the car normally for a few days until the part arrives? I have a 2020 Skoda Octavia with 41,000KM on it and there is a vacuum leak in each of the holes

[@Motorcarnut]

If the vehicle can run fine enough without causing an unsafe driving situation, yes, it won’t hurt the engine

[@Matan2222222]

It runs great, but we can definitely hear air escaping from the oil Seperator, when we cover it with our fingers the noise is gone. That's the second one we replaced with the same problem. Do you have any idea on what to check next? We decided to try a third oil Seperator but im not sure it will solve the problem. Everything is original parts so far​@@Motorcarnut

[@Motorcarnut]

@Matan2222222 what problem are you having again?

[@Matan2222222]

@@Motorcarnut air coming out of the oil Seperator holes. Also, when I open the oil plug there air sucking noise. There's a very distinct sound of air escaping.

[@Motorcarnut]

@Matan2222222 I would try a new one, maybe the others were defective.

[@tshepi92]

Are VW TSI engines reliable? Or are they just crap engines?

[@Motorcarnut]

They are very reliable and have a decent amount of power but they, just like others aren’t perfect. On my channel I have videos on the most common issues. Once addressed they are very reliable engines.

[@buszkenep]

Crapy the chain tensuner is one of tha main problem also tha intake manifold is crapy !

[@Motorcarnut]

Yep

[@cole4987]

Don't buy it. Unreliable and hard to work on

[@Motorcarnut]

Not true, maintenance is key. Most vehicles that come into the shop were never maintained.

[@daniels.8490]

what if i feel air blowing from that hole?

[@Motorcarnut]

It's bad

[@daniels.8490]

@@Motorcarnut so what exactly is that hole there for? I shouldnt feel vaccum or air blowing right?

[@Motorcarnut]

@daniels.8490 correct, there is a diaphragm under that cover that hole is for diagnostic purposes

[@daniels.8490]

@@Motorcarnut aah okay understood. Thanks for the info

[@Motorcarnut]

No problem