2003 Fiesta 1.4 Zetec. There is a small but annoying PAS fluid leak from an area of the PAS system where there is a short (couple of inches) metal pipe (fixed by a bracket to the body near the radiator) with some hoses connected to either end. I can't tell if it's coming from the hoses, or if the pipe (or is it a valve?) is fractured, because it seems to creep everywhere. If this is a common problem, what is the most likely cause? Does the pipe ever fracture and develop a tiny crack?