OK so the error codes were
P0303
P0307
P0306 misfires in those cylinders.

He said they already checked..the oil seperators, for a vacuum leak and now as i said they are cleaning the injection system - he said there is a low injector pulse (sprays - low)
When i mentioned the intermediate levers - he said they want to make sure they check everything before they get to that, because it is a pretty expensive repair.

Thank you all for your advice!!!