Yeah, I know quite a bit about diesel engines. I own a construction company. Those diesels are a little less complicated then a these.

I hear the pump prime

The plugs are good

No air in lines

New filter

The first turn it always almost starts, then the rest of thime it just turns over.
No smoke or smell of burned diesel at all.

I'll try heating the block and filter again, thats the only thing I have not tried again.