Tach zusammen, on the topic of crush resistance at the Omega b Z22XE was already written a lot here – many thanks to all who participated in it – I could learn a lot from it. Now I have a question to explain: At my o.a. Omega B from 2001 I installed a new LRT 120 Krummer with the three-layer seal (Elring). Two threads with bolts and all nuts were renewed. Krummer bores, except for the two middle ones – drilled to 10mmAng In April the ZKD had to be changed – no high temperatures, but CO measured in the cooling water. The repair was carried out in a free workshop (chain). A ZKD sealing set (Elring) was installed – again the three-layer gasket. Head planned and ultrasonic cleaned. To this end I put Mercedes stand-up bolts and nuts. The workshop I worked on – after “Rosi” in three passes up to 22NM. In my presence we have found that the cracker has moved away. From the 4th to the 1st cylinder, the cracker has been turned on again to “Rosi” – see above – max. 22 NM. New nut and large washers to it. Since the week before last and after only about 700 km after ZKD change, it blows through the first cylinder to the thermostat housing. After about 1 minute in the idle run it is dense. It is not torn. I informed the workshop about this. How could this be – where did the game come from – why could the cracker be forgiven? Lt. Werkstatt had all nuts been tightened to my specifications with max. 22NM. The two bolts from the cylinder 1 were neither straightened, nor had the threads pulled out of the head – the problem would be on the cracker – says the workshop owner. But somewhere must the gap arise – and above all how!? What can be wrong here – not been done properly In!? Does anyone have an explanation for me – I would like to understand. Thank you in advance. Greeting……Chmpo.