Mojoan-
Glad you got it started. Perhaps everything is fine at this point, but I heard one noise in your videos which I wanted to mention. It is a high pitched whoosh of air, that sounds like a dummer tapping on a snare drum (or maybe high hat). I got that noise on my car when I overtightened a glow plug, which broke it. This caused a leak of air to occur after each ignition in that cylinder. My car was able to start with this condition, but would not run well. So I might be imagining the noise in your videos, but I wanted to mention it.

Oh, and by the way, I challenge you to a drag race!

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).