Fuel pump 2350. Can’t get toppets out.

[SquareOne]

It's hard to tell, but in your first pic it looks like the roller wore a significant path into the lobe driving it. How long did that fuel code keep occurring? Whats the hours/mileage on this engine? Had anyone replaced the fuel pump internals before?

- Like others have already mentioned, although the pump certainly needs to be replaced, the priority is finding out where all the metal went. Hopefully it slowly deteriorated and the filter caught most of it rather than riddling the whole system. Regardless, without properly inspecting for the metal throughout the engine, a new pump will only be the beginning of your problems.

It's my understanding that the pin within the roller is the first to go causing the roller to 'skip' and slide rather than roll causing accelerated wear. Was the pin seized to the rolls or really damaged? The updated version, although not immune to the issue, has a DLC hardened coating on the pins to somewhat prevent this very issue. The normal fuel pump check and part replacement should still be completed though

Good luck and keep us updated. Don't hesitate to ask questions. You're not the first with this issue and certainly won't be the last unfortunately.