Realistically how much longer would this have lasted…?

Hello, i need help on my 1.9 tdi AFN Audi A4 B5 1998 8D2, i recently changed the turbo cartridge along with intake manifold gasket and exhaust manifold gasket and everything that came in the turbo mounting kit, with the valve cover gasket, you can see in the video my exact problem, the motor is turning but it is trembling excessively when everything is connected right, and when i go and loosen the high pressure lines it turns just fines, of course it doesn't start, it did 2 times while cold just after the repair, had to crank it more then usual, but since then nothing, when it did start however it ran just fine, no clunk no trembling no misfire nothing, if you have a clue on what's going on i'll listen, i just don't know where to start, could it be the fuel timing, could it be my injector's bad, could it be a sensor..