Replacement Injectors follow-up update.
The pump on my truck has a rebuild tag on it - I have no idea when, but it says it was remanufactured. Perhaps they rebuilt the original pump and rebuilt the original injectors at the same time - this would explain the old date code (5/92) and the fact that these are probably the injectors that came with the truck when new (Stanadyne Made in Italy P/N 781535.)
It would also (help) explain why the truck runs so well with so many miles... I'm reluctant to replace these injectors but was just considering it since I am "in there" anyway. I priced out a couple and have a rebuilt price range of around $50.00 each. But these are unknown brand or re builder. I would just as soon have mine rebuilt by somebody - I've heard that the Stanadyne are desirable units - but is there really a difference? Can someone out there talk me into getting new injectors, buying blind boxed units, or having mine rebuilt?? Any brand differences?? Vendors you've done well with?? Thanks. Andy