Paulrobert02

Thank you for the link and guidance. The story was very helpful from the beginning till the end (not just the post from 21 Jun). I should remove the intake and clean it as well. You did a great job ! Congrats!

Very interesting. On my 1.2 tsi (cbzb) is exactly the opposite, system to lean. Especially on idle lots of misfires, i change the coil pack, leads and spark plugs. So nothing to do with the ignition.

Thank you for your help regarding the oil separator. It had any valves? Such a PCV valve? When searching for PCV the only part found is that breathing valve which is connected to the air filter tube. But seems to be another or more “pcv” valve… I found oil in air intake, intake manifold. And as long as that oil separator is there maybe they are connected somehow. Thank you !