So the other day when fiddling with the power steering pump, I noticed some "wetness" on one of the PS lines, like oil had been spraying on it. Looking around, I noticed that the #3 injector has a ring of oil around it, in the joint between the nut and the injector body (i.e. not on the block), and the head bolt that's right there is filled with fuel as well. I don't see much indication of fuel spray, but I'd like to fix it anyway and the CD manual doesn't give me a whole lot of information. Can I just turn that nut with a suitably-large open-end wrench, or is it really truly preferable to disconnect the fuel supply and pull the glow plug to turn on this thing with a deep socket? I ask that because, is there a way to drain the fuel out of the supply lines in some way other than "disconnect and let it drip out all over everything"?
Finally, I've been thinking that maybe it'd be a good idea to look at the injectors to see, well, how they look on my '79 TD. Is "current working state" easily observable by eye? I've read here that a set of remanufactured injectors is only about $50 after core, so maybe I should just go ahead and swap them out? I'm curious though if I can glean anything with a visual inspection (been running mostly waste vegetable oil for about a year now in both cars).
thanks,
-tom!