Mazda 6 2005 2.3L Engine Noise(Knock?) / Help Video Included

Hi Guys,

New to the forum, just got a used Mazda 6 and it has this noise that its giving me a heart ache...

The Noise is only noticeable when cold for a few seconds 20 secs approx. and not every time. When accelerating from full stop it does it as well in the range of 900-1100 rpm and then it goes away.

Took it to dealership and they changed the Belt and the Pulleys. but the sound is still there, in the video I attached from this morning the knock I hear its barely there around second 24-26 Ill make a video again tomorrow hoping it will do it louder.





Thanks

This is realy cool if your kinda old but for me, ill stick with the gen 1 or 2 cause most these features would make me mad. An in the snow my abs wants to lock up on some of those corner's so thats enough for me.