1990 F350 460 Lariat LTX 2WD Dually 2 Tanks
The old Return-to-the-wrong-tank issue.
I really don't want to remove the bed to change the pumps. I already did it on an F150 last summer. Even then I thought of a better solution, the pumps were still good - 35# at the rail
While I never took an old pump apart, discussions seems to help one to imagine the workings of the innards. There is a pressure operated shuttle valve that opens the return line to the tank. When the pump runs fuel pressure opens the valve. When pump is off, a spring closes valve! Maybe, it's only a broken spring!
There is a single return line that goes to both tanks. Were I to split the return line and use two electric on/off fuel valves wired to the tank selector switch. They'll replace the function of the shuttles in the pumps.
Looking under the truck, the modification appears to have easy accessibility to place the switches and change the return lines.
Has anyone tried this? Does anyone have a different simple solution?
Any suggestion on the on/off fuel switches.
b
The old Return-to-the-wrong-tank issue.
I really don't want to remove the bed to change the pumps. I already did it on an F150 last summer. Even then I thought of a better solution, the pumps were still good - 35# at the rail
While I never took an old pump apart, discussions seems to help one to imagine the workings of the innards. There is a pressure operated shuttle valve that opens the return line to the tank. When the pump runs fuel pressure opens the valve. When pump is off, a spring closes valve! Maybe, it's only a broken spring!
There is a single return line that goes to both tanks. Were I to split the return line and use two electric on/off fuel valves wired to the tank selector switch. They'll replace the function of the shuttles in the pumps.
Looking under the truck, the modification appears to have easy accessibility to place the switches and change the return lines.
Has anyone tried this? Does anyone have a different simple solution?
Any suggestion on the on/off fuel switches.
b