Nissan X Trail T30 Cold start nailing

Hi, everybody! I ran a Nissan X Trail 2.2 DCi from 2006 with 64500km, which makes me despair… the following problem: When the car is standing outside and hit in the morning, it nails the first 1-2km drive extremely with an additional noise while giving off that sounds like a storage damage. As soon as the car then has operating temperature, there is nothing left! The best thing is that when the car is in the garage, the problem is not present!! At the moment, he is at the Bosch special service, where Nissan dealers are also bringing their problem cases. At first he said that two injection nozzles are defective, were renewed, no improvement. AGR valve, air mass meter, injection pump and engine temperature sensor all values flawlessly. The customer service master would have heard of several cases that dealers have already renewed complete injection systems with control chain and belt drive, without Erf olg. If he leaves the vehicle overnight in the workshop, nothing is as said, if he parks it outside, the problem occurs, he would not have experienced it yet. I do not feel like renewing everything now on suspicion, therefore this mail. Maybe someone here in the forum has already had a similar problem and can give me a tip! Thank you in advance!