We have just come back from a short trip Falmouth to truro as I got out the bongo I could hear a hissing sound. I lifted up the the drivers seat and there on the right hand side is a large black pipe which seems more swollen than the last time I saw it

. There is a small hole in it!!! Can anyone tell me what the pipe is and is It something I can just swop over . Or will I need to go to a BF garage

Can I just patch it up in the mean time with insulating tape

. Sorry no picture as battery flat on the camera.