Looking back at your old posts, a couple questions:

1. Are you getting any oil pressure when cranking?

2. Have you updated the glow plugs / wiring yet?

I doubt #2 is the problem since it wasn't a problem immediately prior to the no start - #1 worries me.

Otherwise, in the video of you cranking it, it sounds like it wants to start, you need to crank longer though. Hook up a battery charger to your battery and turn it on while cranking. Hit for 30 seconds at a time and then rest for a several minutes before trying again. You messed with the fuel system, so there is probably some air in there and it takes some cranking to get it out.

I hope it is just a fuel issue. Didn't see anything more about your oil pressure in the previous post though.

Good luck.

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'95 E300D ("Tank") - 231,000 miles
'79 240D ("Biscuit") - 197,250 miles (Sold)
'83 240D ("Ding-Ding") - 217,000 miles (Death by deer)
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"Back off, man. I’m a scientist” ~ Peter Venkman