Chain rattle 3.0T
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- čas přidán 26. 08. 2024
- Since last week I've been hearing an intermittent chain rattle. Sounds like a chain slapping. Start for a couple of seconds and then stops for a few. Only happens with a cold start and is completely gone after driving a few hundred meters or when the engine is a bit warm.
Upper timing chain tensioner? I've been reading loads on this topic but any experience or opinions on what this is and how to deal with it would be appreciated. Thanks
Somehow it's louder on video than IRL.
**** UPDATE ****
The noise didn't sit right with me hence I decided to replace the timing chain including all tensioners. Good thing that I did: pieces of plastic from both upper timing chain tensioners were broken and that's what causing this 'chain slapping' / sound. The TSB re. the 2-3 sec. time rattle on start-up is complete BS as this doesn't occur when the 3.0T is straight from the factory or timing chain and tensioners have been replaced. Click below link on how the engine should sound:
• 3.0T after timing chai...
Thanks for posting this, a lot of videos are only the first X seconds at cold start - a B8.5 I was looking to buy was making this same sound on a warm idle, primary from the right bank. Sounds exactly the same and saved me a big headache.
Glad the video helped.
I would recommend cleaning the vvt solenoid and replacing the upper tensioners since you don’t have to drop the engine for that. I’m in the middle of doing mine and I had to drop the engine to do all the chains and tensioners (my chains weren’t stretched at 155,000km). There is a TSB on the upper tensioners
Decided to a complete replacement, it's purring like a kitten on cold start-up now: no rattle at all (also not the 'within tolerance' 2-3 sec chain rattle)...: czcams.com/video/XvqWfTW9t4M/video.html
Can you show location for vet solenoid on 3.0 tfsi?
You don’t have to drop the engine for replacing the upper tensioners??
@@Connordgray I've heard many times that you can change them in car. It's basically the same procedure as the old 3.2 v6. Only difference is you have to remove the combi valves behind the timing chain cover, which is a total pita. You basically have to use a mirror to see what you're doing. And having small hands definitely helps lol
Thank you very much for posting this video, and even better for updating it with the solution that worked for you!
I have been searching to find a video that replicates the sound I hear from my 3.0T and found nothing until this video, its the exact same! I also wasn't sure if it would mean a complete timing chain replacement, but I feel better knowing that this has worked for you and hopefully it will work for me.
Thank you, thank you!
I bought a 2010 a6 that made a tapping/rattling noise. I had assumed it was upper chain tensioners. I replaced those and after rebuilding the car still makes the tapping. After seeing this video it doesn't seem to be the same noise. I posted a vid on my channel if you'd like to listen and offer ideas? It gets quieter above 2000rpm, and when you put the car in gear. When you bring the revs back down in N, it gets louder towards 1000rpm but gets a little quieter at idle
@Kenyon: listened to your vid but does sound somewhat different from the sound that my engine was making. I'm no expert but yours does sound similar to a rod or lifter knock given that it varies with the RPM.
I have the same
I guess for now start with cleaning the vvt solenoids and changing the oil to 0w-40 and if it’s still there look into the upper tensioners
Thanks for the tip. This was indeed my plan. Will go for a cleaning and oil change, switching to 0W40.
@@S.Alighieri those are the upper chain tensioners, i am almost sure changing the oil won't help, i've tried that too as i've had the same issue and only by replacing the tensioners i solved the problem.
@@mik15ful Same as my dealer told me: replacing oil wouldn't do anything, decided to go for a complete replacement.
@@S.Alighieri how much did it cost?
@@madbroindustries You're looking at somewhere between € 3000 - 3500.
Hello I was wondering if you had to pull the motor for this job
@@teemohosn7367 yes, motor had to be pulled for this job. Mostly because of the location of the timing chains.
Hey I would like to know which of the timing chain guides were broken, I have exactly the same noise on cold startups 2 min or so and it follows the speed of the engine . If I’m correct i think the chain is slapping on the aluminium part thats supposed to hold the upper guide in. Please Let me know
It was one of the upper timing chain guides. You're correct if it is broken the chain will slap against the aluminum part.
Thank you!
Will inspect it by s VAG specialist this week. As my tensioners hold pressure on startup, and the chain doesn’t rattle. The only problem is the slapping chain at cold. Once the engine is warm, after a minute or so no more noise. I might upload a video with the updates
@@bassot44fairly sure I’m in the same boat myself. Where did you end up?
Pretty sure I’m in the same boat as you guys. Just bought my c7 6 months ago and didn’t notice the noise then but I’ve put 12k miles + on her already. About to change the oil for the 3rd time since having her so I figured to send out the oil to be tested too.. Any insight on solutions is appreciated!
Hi sir, got this exact problem.. did you drive the car normally until you got it fixed? Going to replace my tensioners, hoping it will fix the chain slapping.
Hello, yes. I did drive the car a bit more cautious until it was fixed.
Thank you for fast reply. I do have one more question just to be sure! One of your upper timing tensioners got bad/broken right causing the chain slapping?
Wenn der Motor läuft klingt es bei mir etwa so wie im zweiten Video, also ohne das rattern, aber dieses klirrende Geräusch beim Start bei Sekunde 3 hab ich auch jedes Mal, weißt du woran das lag? Hab 60000km drauf und hab das schon seit dem Kauf ab ca 35000km.
Also, wenn es aufhört bei 3 Sekunden dann ist das 'normal', der Öldruck muss sich erst afbauen und das kann bis 3 Sekunden dauern. Dazu und beim normalen Gebrauch sollte man die Kette eigentlich nicht hören bei 35.000km bis 60.000km. Eher bei >120.000km.
Hey, ik heb een A7 3.0T waarbij ik ook een ratelgeluid hoor tijdens starten, zouden we in contact kunnen komen?
Vacuum hoses it could cause the same rattle…o2 sensor …cat convertor
I just bought an S4 B8 and it makes a ticking sound but it sounds a lot like the injectors
I Think Thats normal bro
It’s normal Evap valve
Hey man I'm having a similar problem on my S5 3.0T, I took it in to get it fixed but now it's even worse. It rattles for about 30 seconds before correcting itself. Now the car will start and idle very very low before idling at about 1700 rpm. Just tried starting it up and it wouldn't start unless I gave it gas.
That sounds like something is off: I did a complete replacement and no chain sounds whatsoever: czcams.com/video/XvqWfTW9t4M/video.html. Good luck with your car!
@@S.Alighieri My timing chain needs to be replaced, got quoted $7200. God help me
@@F80char bummer man! I shopped around and got it replaced by a specialist for EUR 3.000. Dealer initially quoted around EUR 5.000....
i have an s8 4h 2014 thats gone 6000 miles and it makes this sound when startup, do i need to change the chain?
With that low mileage I'm quite certain it can't be the chain. The rattle is normal for 2 to 3 seconds (oil pressure needs to build up on the tensioner) but that should be gone after a couple of seconds.
@@S.Alighieri it goes away after a few seconds, could engine coolant have something to do with this? I saw the level was at max
It was 36 000 miles not 6000** my bad
@@Marius9453 not sure but I think unlikely as the rattling and coolant are not related. Should be fine if the sound goes away that fast and given your mileage.....
Hi, I've got the same engine but it only makes the "bzzzzt" sound on 0:03 . Is that normal or it is also a symptom of a chain or tensioners problems?
Hi there, the 'bzzzt' sound is something unrelated to the tensioners (or so I've been told).
@@S.Alighieri thanks mate!
@@S.Alighieri any idea what exactly that is?
Try can of Winn oil supercharger add in
Ever figure this out, just started happening in the cold with mine
How many miles on it?
Around 80.000.
My shit is on and off but your shit didn’t even make chain rattle on start up. U got something else going since
Water pump
was your car also smoking alot out of the exhaust ??? mine is doing this exact sound and its smoking out the tail pipes badly...
On cold start / with cold engine there was (and still is) quite some white smoke visible from mine. Once the engine is warm there is hardly any smoke. I don't think that is related to the timing chain issue however. Has to do more with the volume of the engine and condensation, I believe.