Good evening.
If I need to post first in the presentation Forum please let me know.
I am here not only to get help but also to help other members.

I am a owner of a w202 C250D (OM605.910) with 400k km. Since last year it started to missfire when is only cold started. One person says it is compression, or a compression leak. Other tell me it could be bad lifters (tappets) , bad injector or engine timing.
As anyone experienced a problem like mine? Also when the car sits in the sun the missfire still exists but not so strong.
I also noticed that my crankcase ventilation system is toasted. I already ordered new pipes from mercedes. How I test the PCV valve? It has flow in both directions.

Thanks in advance


when it sits in the sun
https://www.youtube.com/watch?v=5oc9CGf-Bqg
When sits at the garage
https://www.youtube.com/watch?v=xIAWniHUcXk
The strange noise when the injector cover is out (PCV valve?)
http://https://www.youtube.com/watch?v=dD-qCvS2fIM
http://https://www.youtube.com/watch?v=PFnXidO1iq0



PS: all the glow plugs are working