Injector Nozzle Questions

[tuffytractor]

While I was preparing for the 100 Hour service I noticed my two rear nozzles looked inordinately caked with gunk. Checking the lines the third one back was oozing some fuel down the line, so I tightened it up. I did run it out of fuel on one occasion and had to bleed the lines, I'm guessing I didn't get it all the way snug back then. Would that explain the current appearance, or is there a bigger problem I need to watch out for?

Let me know what your thoughts are, thanks. (sorry the pics are a bit out of focus)

[3RRL]

Tim,
Looks like you might be right. How often do you get under the hood? If that is 100hrs worth I think it's an injector leak like you think. If it was an oil leak, the top of the valve cover would not have residue on it like that. I think you have nothing to worry about.
Just tighten up everything per torque specs (if any) and check it again to see if the leak stopped.

OAN, I see a clear tube running from your valve cover oil fill knob (I think that is what it is)? It goes to your intake manifold. Is there a PCV valve or any kind of check valve in that connection?
Rob-