So I was poking around in the engine bay today, trying to see where I'm going to have to fit replacement gear cables given that mine snapped on the way to the garage to get my MOT done the other day, and I noticed that there was a rubber hose (black, maybe 5-6mm OD) coming from the engine whose 90deg connector has perished and pretty much fallen off...
the tube itself is (or rather, should be) connected up at the top-back-right of the engine as you stand looking at it from the front of the car, and runs off along the back wall of the bay off to the right,
there's a little clip on what looks like another tube connector on the engine just to the left of where this tube connects.
So, after all that rambling, I guess my question is: what is this tube, does anyone know what the diameters of the connector ends need to be (so I can try to get a new one from somewhere - I didn't take it off yet because I'm sure it's going to disintegrate when I do

ok, so that was three questions rather than one

cheers,
al.