Ill be honest, I don't think the lift pump is whats causing the flakes. I saw my old HP4 and the gears were worn down a bit. What ended up being my no start issue was the new lift pump they installed was DOA. They cleaned/flushed my old lift pump (new pump #2 is on backorder) and put it in the truck to get me rolling again and the truck runs great! Big difference in performance vs how it was acting before.Yikes, mine had the metal in the fuel filter but they blamed the lift pump (in-tank). They said the tank was clean, so it had to be the lift pump causing the metal bits and not the high pressure. Does this make sense?
That is a pretty big tank to fully inspect by looking around with a flashlight when the lift pump is out. I don't know if a magnet would work to do that either? Is it really brass or just brass looking metal that may be magnetic?
I can see why dealers give some folks the runaround. Its a pretty lengthy procedure, parts are hard to get right now and most dealers are lucky to have 2 diesel techs. They know about this issue for sure.