Too late now, but for future reference.........
If you ever cut apart a CUCV's stock Stanadyne fuel filter, you'll realize that it doesn't take much to completely clog one up - they have a ridiculously small filter element area and there's no bypass. If you have the stock CUCV fuel filter setup, don't leave home without a spare. A clogged fuel filter it will act as you described and it's very common for the stock filters to go south quickly - especially running dirty fuel or WMO. Odds are decent this was your problem. If the engine acts up like it's having fueling issues and *you need to limp home* there's a temp fix you can try (costs nothing, no tools required): Pull off the fuel filter and blow as hard as you can through the outlet (if you aren't sure which hole that is, it's marked on the filter). If it's a typical neglected filter, usually a bunch of black/brown sludge will come splattering out the inlet hole. Bang filter on grill guard and blow out a couple more times. This process "backwashes"the element enough to get some of the debris out - usually just enough for the filter to flow enough to supply the IP under light load. Reinstall your cruddy but newly "backwashed" filter, Pull pink wire off Injector Pump, open bleed valve on fuel filter housing and crank until you see fuel squirting out bleed port/no air pockets. Close bleed valve, reinstall pink wire on IP, engine will probably now run well enough for you to limp a few more miles down the road or until the filter completely clogs again. Repeat as necessary to get back to base or safe harbor (or until you find an auto parts store within 10 miles that carries those gawdawful Stanadyne box filters so you can buy a fresh replacement). Check fuel tank for sediment/crud, drain, flush lines, clean pickup screen in tank (sock) as necessary when you get to home garage.
