Caution: Refer to Fuel Rail Stop Bracket Installation Caution in the Preface section.
Important: The intake manifold, throttle body, fuel injection rail and fuel injectors may be removed as an assembly. If not servicing the individual components, remove the intake manifold as a complete assembly.
Important: 
   •  Do not separate the fuel injectors from the fuel rail, unless component service is required.    •  Use cleanliness and care when handling the fuel system components.    •  Do not allow dirt or debris to enter the fuel injectors or fuel rail components. Cap ends, as necessary.