My grandparents have a 90 E150 with a 5.8 and the diaphragm in the fuel return valve has gone bad. It seems to be a dealer only part and they want $232 for the whole assembly and they don't offer a service kit. I've been trying to find a more economical solution but haven't found much except for this.
Ford E
It seems to be a guide on rebuilding the valve with a reference to the parts at the top, but when I clicked the parts link it took me to a page here on FTE. Does anyone have any experience with repairing these valves or know where to get the parts?