If i add manual vertices, join them with edges by pressing F, then selecting all the lines and pressing F to make a face why can i now not add new edge loops with ctrl + R ? I added the lines and faces because they seem to have been missed when adding an edge loop
More info is needed. The description really doesn’t let anyone know what your mesh looks like, what you are selecting and pressing F etc etc
Add screenshots showing the problem, upload your blend file to http://www.pasteall.org/blend/ and tell us the download link
If you get nothing with Ctrl+R then you have no loop.