Cold engine problem

[aydnk]

Hello i own W210 2.4 V6. When engine is cold. i give a gas little bit. engine dies and weird (pak-pak) noise coming from engine.But it works perfect when engine is hot. can you tell me guys whats the problem? ( sorry for my bad english i am not living in US)
Here is video about my problem

 

[aydnk]

Replaced MAF two times, cleaned throttle body , injectors.
Computer shows nothing no codes

 

[00slk]

Sounds like sucking air in from somewhere?

 

[Gazwould]

A leak defo .

 

[aydnk]

When engine warms up. it works like a horse zero problem

 

[aydnk]

Maybe EGR problem what you think guys?