I have a 69 dart with a stock fuel tank, a blue pump, going to a regulator, and I noticed a hammering type sound at the regulator and my AFR gauge would go lean

to give you a more complete picture of the fuel system, which is being switched out today however, I just don’t want to do all this at the same thing occur

It’s a 3/8 sending unit going into the pump, going into a half inch aluminum line that goes to my regulator

The new system I’m putting in is a fuel cell with a -8 line going to the pump going to the 1/2 line. plastic tank

and of course, I’m trying to rethink it and thinking about a return line

however, I know I deadhead system as work for years for most people