I have issue with my yeti fl (2015 my)

2.0tdi 103kw 4x4 dsg

When I accelerate or car is under load uphill it has rattle simmilar to when cv joint is failing when turning. I hear it on left side of engine/drive shaft (my car is lhd).

I tried with replacement of joint next to gearbox on left side without any luck.

Mechanic tested all three rubbers (front and back flex disk and middle rubber) and everyrhing is ok. Dsg has excelent parameters but it still is there.

One mechanic told me that i replace dual mass flywheel and it was little metallic sound on turning ofd but even with dmf replaced sound still is there.

Here is how it sounds

There is no vibration on steering wheel just the rattlle.

I could feel slight vibration on my feet but it is very very small or I'm maybe thinking.

Please if you have any suggestion do tell.

I dont know if it is maybe with front left wheel main bearing (hub) and maybe bad teeth on outer cv joint).

I really don't want to play guessing game with mechanic because they just say i can replace this or this. Without testing or beaing sure of their decision but i need to play their guessing game.

Thank you guys in advance.

That sounds like one cylinder not firing.

I tested on vcds injector corrections were small.

Should i test it in vcds in some other way?

Could it be an engine/gearbox mounting?

22 minutes ago, sebekkg said:

I tested on vcds injector corrections were small.

Should i test it in vcds in some other way?

This could be a worn camshaft, which would result in poor firing on that cylinder. I don't believe VCDS or its ilk will report on this (hopefully a serious VCDS expert can comment) but a compression test can give some clues. Beyond that it's rocker cover off and mk1 eyeballs.

I speak from experience with our Scout (BMM 2.0l tdi) which had exactly that problem and sounded like yours is doing.

Car is idling nicely. And there is no "irregular" noise when idling. But I will see with mechanic. Problem is that i can hear it that is on the left side of the engine, somewhere in front of my feet. That's how i can hear it/locate it.

Just a thought on tracing the problem. Our Indy pulled the rocker cover and ran up the engine, at which point we could clearly hear the misfire as a result of the worn cam lobe. I thought I'd be able to see the wear on the lobe but it was not possible, and only verified when the camshaft was off and miked up.

Thanks i just need to find a mechanic that is willing to take time with it.

You had rpms oscillating on idle or it was stable?

7 minutes ago, sebekkg said:

Thanks i just need to find a mechanic that is willing to take time with it.

You had rpms oscillating on idle or it was stable?

1) pulling the rocker box is easy enough as long as you have the long sockets to get to the rear holding down bolts. Not technically difficult, just awkward.
2) steady tickover but with accompanying noise.

Sorry that i didn't mention. When i rev engine while stationary there is no ticking. Only when car is moving and while under load uphil (woth low rpm and engine is needs power to go) on even surface with for example 40-60% of gas pedal press (sort of speak).

Might be saying the obvious but some have mentioned an engine issue. The car sounds like an auto and the noise isnt engine speed related its road speed related so that moves the culprits to certain areas in my opinion.
As its 4x4 maybe its a shaft bearing or a coupling?

My idea as well, something like flex disk or transfer box.

The noise doesn't seem related to engine RPM, but increases with road speed. So much more likely to be something associated with the wheels, wheel bearings, driveshafts, output side of the gearbox etc. It is also much more prominent when high torque loading is present, i.e. when accelerating in lower gears. It is hard to trace noises like this when in the car. You might need to rig up a remote microphone for use by a passenger when driving. If a front driveshaft outer bearing the noise may change with steering angle.

I was at the mechanic. He finally had an appointment for me. He changed half shaft and this loud noise on hard acceleration is gone but the same type of noise (but lot less loud) is still present. Not on hard acceleration but when car is moving at some steady speed and if i accelerate little bit it is ticking but as i said not as loud.

I don't know what else is there besides dsg flange or something inside transfer box. Because if I am not mistaken that broke half shaft/ cv boot.