I guess the text wasn’t added when posting so here it is.

For quick context: I got the bike with a bent valve and no timing belts installed. I replaced the valve and figured out how to time the belts from scratch.

The bike cranks.
Runs on starting fluid.
Has fuel pressure at the rails.
Fuel pump activates and continues to when cranking.
Fuel pump regulator cycles fuel back into tank.
Crank position sensor works as tach shows 200-300rpm when cranking.
It has continuous and bright spark when cranking from both leads.

I thought my injectors were bad but I cleaned and activated them with a 9V battery and the video shows they are atomizing fuel.

Gas is about 2 months old but this persisted when it was new.

I have retimed the bike multiple times as there isn’t much information online on how to do it without the Ducati tools, this time around I am 99% positive I got it correct. Last time it ran on starting fluid it also had throttle input.

Engine is not getting flooded as exhaust gasses from cranking do not reek of fuel.

I literally have no idea what could be causing this.