I am removing the intake manifold (1986 1/2 928s), repairing an oil leak, and looks like I need to remove the fuel injectors and "fuel rails" to completely remove the manifold for powder coating.

The rails are attached to the injectors and not sure how to disconnect the injectors in order to remove the rails. The fuel rails have 2 bolts mounting to the manifold and two couplings connecting the fuel line.

Has anyone done this and can give some guidance? Do the injectors come out with the rails or remain in the manifold? I've read it done both ways in a 1987, which is different than the 86 1/2.

Any help is appreciated.