Hello everyone i have a 2000 expedition with a 4.6 v8, has 2 coil packs not the cop packs, my question is i have 4 injectors that are not getting power they are #4, 5, 6, an 8. The injectors are good been tested, have spark to all 8 cylinders, but found out its a fault in lose of power to those injectors only, has anyone ran into this before an how do i fix it