Plenum Manifold removal 4.2tdi

[jonnypym123]

Since I've got some holiday lined up and can't go anywhere I've been working on the car, has anyone removed the air plenum manifold before on the 4.2tdi? going to replace the manifold with a nice clean one, any tips for removing the fuel rail line linking the 2 rails, is it pressured? bit scare of starting to dismantle things, I've attached a photo of what I'm on about for reference