Hi guys
the problem was a bend intake valve!
Probably I did something wrong before mounting the head and turned the cams separately so that one valve bended the other…and needed to be replaced!
Now that is resolved, the engine runs, but to fast (1500 rpm)
I tried everything but cannot get a lower idle, what to do?
Any suggestions?

Marexke,

What year/model/engine?
 

Please specify year/model/engine when posting mechanical questions...otherwise, guys like Doc, Benzmac, Steve and Aaron will not know which of the approximately 4.2 trillion answers in their heads is correct.

Just kidding with ya, but please do advise.

Alternatively.....
 

Post as a reply to your original post to bring it to the top of the list. This refreshes us with the original description of the problem. Hopefully, you also gave more identication info originally as well!