So about 3 months ago i did an eaton swap on my 04 MM. For the past about 3 weeks i have gradual seen a power loss get worse. I hooked a fuel presure gauge to my fuel rail and keyed the car, it jumped up to 15 psi, i keyed the car a few more times and the psi stopped at 25psi.
When i did the Build i installed an Aeromotive 340 fuel pump. i did replace all the fuel lines in the tank.
What could this be??? Fuel pump bad already or FPDM??