Feeling Defeated. Fresh n14 rebuild, oil pan filled with diesel

So I just freshly rebuilt my N14 cummins on my 98 KW w900.

I've started it a few times few testing it, moved it out of my shop. Drove it 3 miles. That's all.
Yesterday I was doing some more stuff on truck like brake lines. I topped off coolant and checked the oil. the pan is litterly filled with diesel. And not by a little. It's filled with it.

I followed everything in the service manual when I did the rebuild. Injectors have new orings on it as well.
What did I do wrong or what did I miss?

 

Figured that would be the first thing to check so ill be doing that hopefully tomorrow

 

I was thinking about trying dye from a buddy who mentioned that to me.

No, when I pulled all the injectors I bagged them up and put them in a crate and labeled them as well. Before install I cleaned them, put new orings on and made sure the plungers moved freely.

 

Is there an easy way to test that? Would it just go bad like that? The truck has sat for about 8 months before I was able to do the overhaul.

 

Im pulling injectors now to check. So far no twist or broken orings and cups are looking fine