If you can't get combustion on ether, then it has to be compression related. I have added oil to the cylinders, as you mentioned, in cases like this to get an engine to start.
You have bled it to the point where you are getting fuel dripping from the union between the injectors and the high pressure pipes?
A lot of cranking and no fuel going into cylinders could mean the rings are dry, which could affect compression.
Also, I hate to use ether on diesel engines. If I do use it, I spray it on a rag, and then slowly move it toward the air intake while cranking. Or, use WD-40 instead, it's friendlier to a diesel.