1998 d12a missing/loosing power cutting out !!!

I filled up the tanks, drove 250 miles pulled over to take a leak, started to merge back onto the highway, the truck started puttering, missing, lost all power, i pulled over shut down, restarted idled fine but after revving it a few times it did the same, changed out fuel filter & water separator...same thing truck fires up idles fine for a few min as soon as you rev it up if shake misses and shuts down, no smoke or leak, oil level looks same and no diesel in oil, what i did find is alot of tinny dust like shinny shaving in the water separator, i don't know what to do........... what to check or change out :\ pablo if you're reading this please help me out !

 

thanx, where does the limiting valve sit exactly ? and what is considered low pressure ? also do you think the shavings could have hit the overpriced injectors ??? that's my biggest worry

 

Ok so I swapped out the pump it works !