Is the tab underneath pushed in the same? If so the line should be free to remove (the black plastic part stays with the rail). Don't force on the line itself either direction (someone had bad luck with gas leaking afterwards). Once the green clip is uncliped the line should slide easily out ...

The green clip has two tabs. The one we see in the picture, and a second one underneath. Try pushing with a flat screwdriver from underneath while depressing on the other side with another flat screw driver. The tab goes a bit inside then stays here: the clip is in the release position then. It's ...

I can't separate my fuel rail from the intake manifold.

First time posting here. I am working on my '04 non-turbo v70. Long story short I am trying to remove the intake manifold to get to PCV system. I am following these instructions: https://www.matthewsvolvosite.com/forums/viewtopic.php?p=373460 ...