Electric Fuel Pump Repair 

Makes me wonder if running alky is really worth it. I would think the sealing edges of the vanes have a small radius to avoid dragging the corners on the sealing ring? Could you make a sanding fixture with a small radius sanded in it then double back tape varying grits of abrasive paper to form a radiused edge? I rebuilt an old GM power steering pump and noticed that feature on the vanes. May even improve the efficiency of the pump? Also I gotta wonder if that gunk is in the filter.

A wondering if your filter ought to be changed to being installed before the pump given that it’s recirculating. Lots of line to pick up junk t jam the vanes.