I'm attempting a minimally invasive installation and would like to leave my fuel tank alone entirely. The idea I have is to install a filter housing on the inlet of a frame mounted pump, and to route the return line to the inlet side of said housing. Most mechanical diesel engines I've been around were plumbed this way for injector pump cooling.

I've been away from here for some time, but I recall discussion of fuel heating through pumping it across the regulator and speculation regarding an inline cooler to remedy the condition. My tank is going to stay behind the seat, and is only plumbed for suction, of course from the top. I think routing to a filter would be quieter in the cab and wouldn't heat the fuel in the tank, if the pump can pull fuel across a filter after lifting it up the pickup tube.

I feel like once primed it should work, but you could fill a warehouse with things I don't know. Please alert me should it seem my logic is not firmly based in reality.