Thanks for moving this to a new thread, vstech. I was wondering where it went.

I found the oil to be concerning when I removed the third injector counting from the front of the engine and I looked down into the prechamber collar area and saw what looked like engine oil pooled on top of the crush washer and general area. I can't fathom how engine oil would get past the crush washer. The engine didn't run very smoothly before and it runs about the same as before with 5 new injector nozzles installed. A compression check is definitely a good idea. I will have to put a Diesel compression tester on my tool list soon.

The only other theory I can come up with is that what I saw was not oil and instead half-burnt and carboned up oil. I will post some pictures of the injector and pop test it as well. It is currently sitting on my bench with a trail of black liquid running from it.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge