How do you install a fuel pump on a Mustang? 1. To start installing your new Mustang Carter M6588 Fuel Pump, disconnect the positive battery cable, which will eliminate any chance of the engine turning over while you are under the hood. Place a container or some absorbent material under the fuel pump area to control any spills. How do you remove a fuel line from a Mustang? Remove the clamp on the incoming fuel line with the screw driver or with pliers, if your Mustang still has the original spring type clamp pictured below. With the clamp removed, the...