WOW .. How can a rocker arm do this? Can we repair this S4 B9 engine after such a huge damage ? 

As a recently retired mechanic I am bewildered as to how we have come to having very expensive cars whose engines have components made of crap. I have worked on old Aston Martins ,Jaguars XK120,140,150's old BMW , Mercedes ,VW Audi everything, through to modern cars. I rarely remember rockers breaking , on a PSA hdi engine when the cambelt broke , the rockers, snapped along a weak point saving the engine. A series mini's hitting fantastic revs after a missed gear change...and ...nothing happened. I remember a VW employee telling me that the design life of their products was five years...Then you trade it in for a new one. It was amazing that timing chains became a service item, then the sprockets , now made of sintered material that hook and wear . Then finally roller rockers.... I have seen duplex chains on BMW and Merc engines with virtually no stretch after mega miles with just ordinary service intervals and old mineral oils . I enjoy your channel , but despair of the engineering and build quality of modern German cars.

The work Vag Technic do is truly showing how maintenance should be carried out. Professionally. So now, I would never trust a dealership with such important work! Keep up the great content 👍

If someone told me some years ago that a workshop youtube channel would be entertaining, I would doubt it very much….. but you have proven that it can be very entertaining indeed!! Also being engineer I also learn stuff…. Also I think the trick is the humour!! Keep it up! 👍

Just £1 Million later it will be all good.great indepth detail. Loving your work VAG Technic❤

Loved the start of the video that’s not the drone pilots first rodeo 😎

Honestly I think Audi are building their engines with “stock” tolerances in mind more than ever, to save money. The moment you map a car you are messing with so many variables, heat, pressure and force. Reason after many years of tuning my cars, my A8’s engine will not be mapped, just serviced properly with the best of everything, and I drive her properly and hard when up to temperature. If ever I want a faster Audi than I have I will buy one, which incidentally I do not. I am also aware rocker arms can fail on non tuned cars too. Brilliant video thank you guys..🙌

Thank you for update, had a new 2018 S4 and was told it was the last of the V6 available in the UK, the best experience for a few years without any faults. a shame that Audi won't sell the S4 V6 in the UK but will everywhere else.

Great as usual! These rocker arm issues are still making me question wether or not a B9 is even worth the purchase anymore, crazy job

Hopefully someone will make some uprated billet rockers for these engines. I still believe the oil is a key contributor in most modern engine failures… oil change regime is far to long and needs to be reduce by at lease 50%. These long service intervals are there for the lease companies and the ecco demands imposed by governments. Do yourselves a favor and do a first service at 500-1000 miles and then oil changes every 6000 miles max there after… the chains, guides, cams and bearings will love you.

People who carry on driving car that makes a tapping noise and don't get it checked have their heads in the sand and pay the price. That must have been making a pretty horrendous noise for a while.

Love the stripping down and the detailed examination, great channel, thanks 🙏

Clients allways drive their car in normal manner, nothing crazy, slightly pressing the accelerator and engine just exploded. In my opinion, I am audi owner they were balling in the speed lane in kick down, on the tuned car with the stock components, and there you have it

Audi make the "K" Series Rover engine look not so bad after all.

I’ll wait until 2020 ones come down to a better price. God video again.

You're videos are great, thank you

Loool. all the ohhhhh, hmmmmm, aha......love it. Like al other things with your videos. I am 110% Audi man, 60yo. Have had 7 Audi´s mostly A4 TDI, because I work as a sale rep. I change to company car and now have a Q4, with almost everything that one could get as extra. Done 38K happy km in it. My wife have a 2019 Audi A3 Cabriolet 35 TFSI.done 65K. She loves it. As I understand, we should be aware of cam-chain, and I will have it changed before 85K km. Since I start to look at your videos about 1½ year ago. I will never, like NEVER get a 6-cylindre Audi. Of all the videos I have seen, past many year, I have never seen or heard anyone say this 6cyl, Audi engine is ROCK-Solidt. Keep them coming, and I will stay away from anything other than 4cyl Audi´s, or keep my Audi EV forever.

Good video mate 👍

lol loved the start "mmmm, mmmm, mmmm" so we have gone from the indestructable 16V VAG engines.....VR6 etc to these....i am crapping myself as i own a 2016 Audi A4 Avant B9 3.0Tdi 272hp CRTC model.....owned the car since last Sep 23 and just did my first service after 8000 miles.....the oil was ok, nothing in the oil filer but the services in the book were all Audi and the Air Filter and cabin filter look like they have been in there for years! I will be booking in with Vag Technic for the oil pressure map soon!

gorgeous red doberman!

Awesome video and job 🙌🙌🙌😊👌👍🍀

Love your videos, love you editing mate. Never stop being you. Mhmm Mhmmm Mhmmm *helicopter noises*

Great work once again, l know you can fix it 😁

When we had engine or gearbox issues with Subaru. We used to check the engine ecu for the parameters before it failed... certanly showed up a few standing start burn ups to us.

Love the 🚁 that was brutal 😂

please show us how you re-time the engine and how you remove and install the new rocker arms please :)

After watching these amazing videos from VAG it puts me off from ever owning an AUDI or am I wrong ? Did the owners mistreat their cars ?

Audi engines-there’s a glass and a half in every one 😂

"None of the owners are brave enough to full-send." lmao

"Mmmmmmmmm" Got me every time 🤣🤣🤣🤣🤣

The motto "Vorsprung Durch Technik" appears to be a thing of the past. Driving a modern Audi the Reinhardt's may not even make it to Spain let alone the sunbeds before the Schmidt's & the Muller's.

On 1.8t 20v platform wosner pistons used to crack. Just a heads up, I’m sure you’ve done your research

2018 A7 with 3.0 ea839 engine, I”m in danger :))

Can’t be England - the sun is out…

Do you ever see damage like this in engines that have clearly had the oil changed regularly?

Ha! 'the pistons have a hobby to crack from time to time. That's fair and the rocker arms also have this hobby.

Mr Vag Tech . What are your thoughts on oil in booster pipes ? Catch can ok ?

These cars are driven like race cars

I always watch your videos specially the engine drop / engine strip down videos. One question I always wonder that when you drop the engine as you did for this S4, do you always have to "extract/empty out" the refrigant/cooling or disconnect the A/C system and then refill it when putting back the engine or there is a work around in these Audi? But I see AC compressor is hanging soooooooo, does it means A/C system still intact and loop remains closed?

I have a 2018 Audi A4 diesel 1968cc . 12,000 miles do I need to get the rocker arms replaced and could you supply a rough cost to do a preventative change . Love your videos they are very informative

sweet opening shot, what's your drone setup?

What’s the build date sticker or production from year ??

Starting to look like tuning an Audi is not such a great idea unless you do it right by building an engine to handle the increase in power, ie, good rods and forged pistons. Cars are built to a budget and that means that the engine needs to be built to its share of the overall budget. So most of them have chocolate pistons.

Question for VAG or anyone know. On a Porsche Macan S 2020 with the 2.9L turbo if im good it's the same engine of the Audi S4. Correct me if im wrong. So Porsche Macan having the same rocker arm issues ? And should be replaced as soon as we can to not waking up with a blown up engine. Im from Canada. Tks guys.

That’s a lot of secondary damage for a rocker failure. What would you say is the engine mileage where the risk starts to warrant the rocker replacement job? Thank you.

if u decide to go for a vacation, ur welcome in my home in green hills croatia....lol

Why there is no a class action against Audi. Even if this is happening beyond warranty, this level of faulty design would fail to meet any definition of "reasonable reliability" based on consumer laws in the UK

Right, so the car is a premium grade audi - S4. not created to be driven like a motorway salesman in a modern diesel. They're built to be hussled. I cannot believe that a modern day performance Audi, has to suffer these issues. Makes it embarrassing to own, not to mention the cost of repair. Unreal. It seems that if you own any post 2015 Audi, standby for eye watering break downs. Why would anyone want one? A friend has just traded his Jag 4x4 SUV, for an S5......Why?!? I am an A7 owner, of several years, but can't wait to get rid of it, and go back to BMW. Great content as always Tomas, and equally amazed that the Audi dealer couldn't identify it's issue. Putting it all down to the map...Give me a break!

You couldn’t give me an Audi. Long going reputation for mechanical problems.

I notice most of the videos are on the v6’s. Do you feel like the 4 cyl Audi engines suffer from the same amount of engine problems?

Are you going to have that crankshaft balanced if you decide to re-use it?

Can you weld the hole?

more top quality audi engines built down to the lowest quality the bean counters can do for the least amount of cash

😅😂 maybe we'll try an straighten the loosie goosie bendy conrod 😅😂

Is there some safe manufacturing date after which those reconstructed rocker arms have been built in ?

Awesome content,how good is the ea888 and the 1.4 tsi.

Hello Sir , TOP !! where do you buy the blue shelf? for storing car components?

Small part, big damage! Are the rocker arm failures only happening in the S4 or also in the RS4?

Still no 4.0TT (C7 gen) videos 😢

mhm mhm... hmmmmm... hilarious 😂😂

Is there any ballance shafts in these v6 tfsi engines?

Does 18/19 rs4 avant have the same rocker arm issue?

I have a 2012 B8.5 Supercharged. Do these engines suffer the rocker arm problem?

What !! Was the build date sticker on the door ?!?!?!?!????

How much do you typically charge for a rocker arm replacement on an s4/rs4? Sorry if you get this question alot

Shocking condition for such a car which is not really that old.

Which year was this s4?

So does this affect the D5 A8? It's 2019 or later in the USA.

Is this the car you collected from Audi?

2020 - 24 still have noise. From the bottom end almost guaranteed every single one you can hear it at idle.

I love watching these strip downs and seeing the catastrophic damage caused by faulty parts. It reminds me why I drive a Ford and NOT an Audi! 😀

Hii, can you please advise me on brake discs for 2017 audi a5 2.0tdi 190hp. I changed at audi garage and they are just not even close to the quality of the stock that came with the car. Braking from 250-150 always becomes so loud and they get hotspot marks which go away after a few days. Someone have anything better aftermarket?

Can that engine block with the hole in be welded? To save the owner money!

I'll take an M30B34 with a 5 speed and exit the chat :)

Those rocker arms look so fragile!

Why can’t the head be tig welded repaired?

You should use license plate covers, less work at video edit. Cuz we still saw the license plates even with blurrings. Make 4-5 units with a nice VAG Technic logo and design 😉

Love your videos, hate your choice of music!

Another timebomb exploded

10:44 - Did you say the rocker arms are from Aldi or Audi? Makes a lot of sense if from Aldi to be fair... 🤣🤣

What year was this S4?

What is the milage of this car?

I personally think that cylinder head is salvageable, you have the metal plug I would get it aluminium welded by a very competent welder

How many km was on the car?

Is there a reason you're switching to different rods than the ones you sold me?

Perfect advertisement why you need to service your car Crazy really. I see it all the time. I done a jaguar F Pace this week 115k miles never had a oil change and customer said its been sounding rough and smoking. rattle from timing chain so he put more oil in. Half way up the dip stick. Couldn't understand why oil was dripping from the turbo pipes. 😂 And expected a cheap fix. Yeah sell it buy a electric scooter

4 rings are expensive manholes with 4 wheels…

Remind me never to buy a S4 B9 lol...whatever that is.

Everything is cheap on these cars, apart from the purchase price 😮😅

LOL at the chopper. That engine is fooked; dont remap your cars kids!

hum hum means FFS!

first

Unfortunately😂😂

I’ve had a lot of Audi cars from 2008 onwards upto 2021 and after a while they all needed big repair bills so I wouldn’t buy an Audi again

Maybe I am wrong but why you try to running a damage engine? more damage can be done this way.

not with the drones please, its so passé

😂😂please stop moaning

And Audi are about to enter Formula 1? Hope their engine design andmaterials are far superior to the crap they foist on the poor public (I say poor, because that is what they become if they own an Audi!).

buy a Audi and you will keep paying mechanic for repair

No need to add music. Makes the video unwatchable.

Don't buy a b9 audi