Removal (B4000)
- Thoroughly clean engine. Release fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect negative battery cable. Remove upper intake manifold and throttle body as an assembly.
- Using Fuel Line Disconnect Tool (49-UN01-006), disconnect fuel supply and return lines. Remove fuel supply manifold. See Figure . Disconnect injector electrical connectors and retaining clips. Remove injectors from fuel supply manifold.