Hello, i had already reported in another thread (V6 engine exchange with old STG) that after engine installation the new engine had cracker noises. The camshafts had set on the running surface strongly rust. We cleaned everything and slightly ground, but right at the first time when the engine was running, however, after it was warm, a nailing or clacking from approx. 2500 to 3000 was heard. Lt. Opel should not be the hydros. Everything was off, with him the engine was wall-mounted and he claimed that the engine was still running before the assembly and that was about 3 weeks before our installation. After rust was impossible to judge. The clacky noise has not gone away so far. On the contrary. Now he suddenly began to clap loudly during the ride. So, as with a too high play of a valve, it sounded like a single rattle noise and came from the left side. I took that maybe now a Hydozüssl was completely broken. My workshop called and they said to come here very slowly. I drive to the yard of the workshop and there the engine goes off and all lamps on. At the start again did nothing, the engine didn’t turn any more. In the workshop we tried to turn by hand but also so the engine let itself not turn in the direction of running. The timing belt is not torn after control. The workshop suspects a capital engine damage and I should save myself the effort the left head on But I’m still unsure and I want to have my head reexamined. What would you advise. Greeting Wanzlick