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Adding second fuel tank to E450
I am trying to something a bit different.
I want an aux fuel tank, so I have some questions about the late 7.3L powerstroke fuel system.
On a 2003, is a fuel pump in the tank? (lift pump?)
Is there a return line to the tank or is it dead headed to the engine?
I don't have a bed, so I can't just use a bed transfer tank.
I want to have a large aux tank that tee's into the factory system with a solenoid right after the factory tank.
If the tank is in the back of a van, and the pickup is at the top, would I need an in tank pump or will the system pull from it ok?