How a VNT turbo works with diassembly and DIY repair of sticking vanes
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- Опубликовано: 19 июн 2024
- Limp mode troubleshooting checklist: www.myturbodiesel.com/wiki/lim... Turbocharging FAQ for diesels: www.myturbodiesel.com/wiki/tur...
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This has to be one of the most straightforward explanations of a VVT on the internet. Really good description of how it works. DIY mechanics shouldn't be fearful of tackiing this job. Thanks for sharing
This has nothing to do with variable valve timing though...
VGT*
Can't thank you enough. I hv been suffering with frequent CEL n limp mode for the last 3 months. No service centre nor "expert" mechanics could diagnose the cause (even with official scanning). Their conclusion was the ECU is kaput n i ought to buy a new one.
After sumbling on to ur video today i opened and cleaned the turbo myself and the issue is fixed.
THANK YOU.
By far, the best video explanation I've seen of how these turbos work and why they have issues. I was hoping the notchiness I felt in the actuator moving was from the actuator rod, unfortunately it's coming from the actuator lever on the turbo/vanes. After watching this, I'm way more confident cleaning the turbo. Thanks!
Thanks for taking the time to post this, very informative.
Important to keep in mind: the turbo spins at over 120 thousand rpm, which is 2000 revs per second. A tiniest scratch, nick or bend on the turbine or compressor wheel will throw it out of balance, meaning reduced rpm of the turbo, and damaged turbo bearing.
A very good overview of VNT type turbo and potential fault points. Although Ive worked on a lot of cars over the last few decades this video was a good refresher on the VNT operation.
Extremely nice seeing this live with no animation. Even if you already know how VNT / VTG turbos / VGT work, it's great to really see this once. Thank you!
Best turbo cleaning description so far thanks.
Thankyou, ive been suffering major overboost/limp mode issues, im not getting full travel on the vnt lever but i didn't understand whether up was open or closed, after watching this video i fully understand whats causing my problems.
Great camera work, clear explanation, excellent job.
Perfect explanation and has given me the total insight as to why mine overboosts as with vacuum connected the turbo arm moves less than if I move it manually, and I can feel it dragging inside...now I understand why....brilliant explanation thanks!
makes me want to go outside and take my turbo apart!! Nice video, well explained!
Navas Huskies that's what ill do this weekend thanks to this.
That’s exactly how I felt when I watched this. Ripped my turbo off yesterday going to take it apart today lol
A clear and practical video. Thanks for the efforts!!
Excellent stuff...! VNT Turbo has no mystery left for me now... ! ;) - thanks for your clear nd well illustrated info
"LIMP MODE" I subscribed instantly after you explained that, I've been having the issue you describe on my Open/Vauxhall Signum 3.0 V6 CDTI 03, I'm a newbie to turbos and all the mechanics around here say don't touch it and buy a new one but I want to learn more about the unit and how to fix it myself, brilliant video, thank you
Personally, I would find a replacement out of a salvage yard. Then take that one apart and study it. Clean it and buy a rebuild kit. Then when you take your old one off you already know what you need to do. Good luck on that beauty!
Must appreciate the effort and the detail with which you've made this video.
Very good work mate
Best video seen so far on this. Well explained and good lighten could see clearly. Play in control ring 👍
A good video with clear explanations, it all makes sense. Getting at it is not so easy
Awesome video man! Really detailed breakdown of the Turbo. Thanks 👍
The best video on explaining and cleaning your VNT Turbo
am very happy for this video....
Superb explanation ... I'm a reasonably good home mechanic.. owning a mitsubishi L200...and didn't know exactly how these vanes work .... probably never take a turbo apart ...but it's nice to know how they operate... thanks
Very clear and articulate explanation. Thanks for a very useful video.
Watched the theory at 'Engineering explained' and came here to watch the practical. Bravo to both you guys! Excellent work...
Same thing !!! EE overhyped the explanation and i tough the vanes were in the compressor side .. this videos clearly explains and shows how it works !
Needed this video!! Perfect video!! Just what I needed and helped me figure out that my vanes were stuck.
Just recently found your videos whrn searchinh ingo about limp mode. Best detailed car videos :)
Brilliant video. Answered my question where all other forums failed, and that is "there is no wastegate in these type of turbos". I have been searching for info on the Vito 111 cdi wastegate all week after reading on the Mercedes forum that this is the the reason my Vito keeps going into limp mode. The sticky actuator is for the variable vanes not the waste gate. I wish ill informed people would keep their mouths firmly shut !!
Absolutely excellent video ................... very good usable information !! Now i know what is wrong with my 1.7 cdti Honda when it goes to the limp mode
I just did this on my Saab 9-5 2007 and it works now. Thanks
perfectly explained! Very usefull to limit my charging problems and check the functionality of my vacuum cell
great job. now i have understood what is\how it works a VNT turbo.
Very informative and beautifully presented.
Super told.
For the first time i had understand how it's work.
Thank you.
I have a issue with a overboost.
I had mounted a gauge vacuum on the line to vaccum acuator.
When i press the clutch i have a little to 90% vacuum and after small pitch the vacuum drop to 20 or 10.
After 100km/h, i had limp mode with error overboost.
It's seems that the vane are not clossing.
The actuator moves ok, but as i understand from you, i can have that gap, that keeps the vanes open a little...
Hmmm, i have to dismantle...
In the summer i think...
Thanks again...
Very informative video. Thanks a lot for your effort.
Great vid thanks......gonna start pulling mine apart then clean with mr. muscle and finish with carb cleaner,hope it works.
Hi, you r good, probably the best teacher. Fantastic information & clear video. Now i can put parts to words. Will also do some cleaning on mine. Greetings from the United Kingdom!!
A very clear explenation. Well done
Great video. Really glad I found this. Saved my ass and turbo.
Wow this is the real video which i was searching for... 👍🏼
really excellent explanation, many thanks for helping me understand
God of turbos! Thanks for sharing the knowledge!
Great video thanks. Just replaced my turbo and now I know why.
Hi there ,great informative video, thanks for posting it ,I have a honda crv deisel that go's into limp mode on hard acceleration, also there is a whistle coming from the turbo,
I have been looking for a video that explains the workings of the turbo and now I will attempt to clean the veins. Many thanks Frank
Your video was very helpful. Thank you
Thanks bro love from Kenya 🇰🇪👍
Amazing video man.. you solved all my doubts about VNT turbos... And btw please make the video on how tthe solenoid works in This VNT mechanisms
Excellent video. My Insignia has intermittent power loss and a P003A fault code. Basically, the car doesn't know where the vane position is and goes into fault, dumping the boost. Going to use Revive Turbo cleaner and see if it works out.
Excellent tutorial, Thanks!!
Excellent and very informative!
Thanks for all this informations . Keep the good work
FN amazing! I have a twin-turbo Mercedes and I will try to dial in both sides by using the adjustment nuts--if I can see them.
yes brilliant explanation of how a turbo works
Thanks a lot really helpful and straightforward.
Brilliant video, very helpful, thankyou.
excellent video...
This is a fantastic video
man you have an exelente content congratulations!! you are the man!!!!!
thanks i been clean a few turbo all is done well
Best video I've seen
Awesome video. I am buying a 2014 with tdi. As preventative maintenance i was looking into a rebuild kit for the turbo. Found many sites saying they are not rebuild able. Some said it takes special equipment to disassemble them. Finding parts may be tough but i see i can definitely disassemble it to inspect and clean. Look pretty easy. I have has variable geometry cummins turbos apart and this looks very different but not any more complicated at all. Is the nut on the compressor wheel left hand thread on these?
excellent video . well explained!
Thank you! How much play is too much play on the actuator arm lever in that ring?
Perfect explanation!!
Another good video Chitty the forum has gone to crap since you have sold it, you link doesn't work now
Thankyou great video very helpful
I can see clearly now ! Great video man. How often should a vnt turbo be cleaned? i drive about an hour daily, defender td5 2.5 Turbotechnics VNT turbo.
Hello. Nice video man, easy way to understand what's going on inside a turbocharger. Quick question... Why am I losing pressure through the hole where the actuator lever controls the control ring? This happens only when the vacuum hose is connected
Adjusting the stop screw - how do I know where to set it? Is there a spec for the clearance between vanes? Thanks, awesome video!
Mate awesome well done
excellent tutorial. thanks a lot.
Thanks for an awesome video, well explained tutorial on this turbo unit.. I now have a clear idea what's happening to mine.
A+++++
Very informative video... Liked.
This is a great video.
Very good video 😊
Thanks for the video . I would like to know how you take the control ring out of a 2010 vw MK5 2.0 tdi tubo. Thanks
Super video, and great eksplanation..
My 2001 vw passat, shows low boost error p1556. And got no turbo power bellow 28-3000 rpm, so it could be that the wanes are stuck at the non vacum position??
I think i havea look at the actuator and see if itmoves when vacuum aplied, how much should it move?? About 1 cm??
Cheers
Johan
The Transit is the first Turbo I've owned with a VNT. I bought a new one and had it replaced, never knowing really what it did. The magic words here were 'a VNT system doesn't have a BOV" or something to that effect.
I used Winns turbo cleaner spray. Sprayed a whole can in the turbo while the engine was on idling. Gave it 10 min took it for a spin and i can't believe it did the job. Easy cheap fix. And no service gave me this cheap option it was a last resort thing to see if it worked. They wanted me to recondition the turbo...car works fine now.
On which side of the turbo have you sprayed? Intake or exhaust? Did you leave it for 10 minutes at idle with the spray in? Thanks.
Abia acum am observat ca esti tot roman. Mersi Gabi.
excellent video very helpfull
thank you
Great video thanks for sharing
Great stuff and thank you so much
excellent teaching....
Awesome Awesome . Very good video . Bravo
Great video!
awesome vid. thank you
I agree very good video. I have a question I took mine apart to clean it. Then when I put the ring back on that has the veins on it and tighten the screws down the veins will not move. So I wonder if I am tightening them too tight should they be allowed to float a little bit.. if you could get back to me ASAP would be greatly appreciated.
If you are doing this yourself at home mark the oil inlet position on both housings before you take it apart, saves problems on reassembly.
Great info man
Very informative video, i might have a faulty turbo...
Great video, thank you
Well explained👍
Great video ! I have 2017 vw amarok bil turbo . Are both turbos looks like this ? And how often should I do maintenance?
thanks for this video very helpful
At 13:09 the "control ring " is in upside down. The notch that the control lever sits in on the control ring sits between two holes. One is a "slot" and the other is a "round hole". The round hole should be on the left. I'm certain this will not allow correct amount of travel.
Great video thanks very much .
Excellent explanation, well done. people scare you all the time to repair a Turbo ! But like everything else, Common Sense prevails.. Considering, Turbos rotate at a very high speed.
My car goes into limp mode at low revs and is slow to accelerate. Even more so on hills.It is an 2003 e270 diesel. Does it sound like the veins are sticking to you?
Great vide by the way.
Where did you go man keep educating us bro
Very helpful, thank you. 🙏
What a good video, thank you.
Is the control ring made out of brass? Thanks and great video.