3.0 TDI idle sound

[fuxen]

Hello guys,

Got sent here from B8 sub, since most of them in NAR are not diesels.

Hello guys,

First of all pleased to join here, been a lurker for few months now decided to register.

I have a thing that is bothering me for a while. So I have an Audi A4 b8.5 3.0 TDI 180kw. After replacing the timing chain set and a lot of other things while the engine was out, I noticed that theres a sound that I think I never heard it before. The sound is kind a hard to describe - it is like puffing, hissing sound. If it was a truck, I would say that air is leaking somewhere Interesting thing is, that sound is only heard if you stand in front of the front wheels - left and right. If you stand in front of the hood you just hear normal engine idle sound. Car runs perfectly, no problems, no fault codes, no increased fuel consumption etc. Some guys said, that maybe the car wants to do regeneration. Heres the video: https://imgur.com/a/UDCOPJ1

Best regards,

[Vr4play]

If you had your injectors out did you replace the seals before you put them back in? Could be compression getting past the injectors. Would sound like a puffing noise. https://youtu.be/0vM3jNzUPoM?si=2dF2yeddVtPykzC9