PUT THE EITHER AWAY, in the trash can!!!!!! It has NO BUSINESS BEING ANYWHERE, I REPEAT ANYWHERE NEAR A MODERN DIESEL!!!!!!!! unless you want bent push rods, broken rockers and bridges etc etc or worse. U know how much either it takes to make it through the turbo, CAC pipes and CAC itself? WAY TOO MUCH!
His filter bowl is filling up with fuel so I highly doubt a lift pump is the problem. I strongly feel like he has a HPO problem.