CDUC 3.0TDi rattle

[whito]

Hi, I have rattle sound from engine bay.
the sound does not appear regularly, just add a little throttle and it disappears.
Sorry for my eng and thanks for comments.

 

[Sibmets]

Sounds like something is loose and is contacting something, I'd investigate further. Mine definitely doesn't have this kind of sound.

Audi A4 B9 3.0 TDi quattro 200 kw

 

[whito]

Thank you for the comments, the sound source was the belt tensioner and the belt itself, I sprayed the belt with WD40 and the sound was lost.