This is my first post so I would like to say hello to everybody. I have got similar problem with my Citroen Dispatch, 60 plate, 1.6HDI. The temperature gauge is going above 90 and when rich 96 the fans starting, that is ok but coolant leaking from header tank, the pressure looks like is very high.. radiator top pipe is very hot and the bottom one its just warm, radiator itself is deadly cold. Engine running smooth and you can feel power, nothing is coming from tail pipe, no white or black smoke. When engine is cold e.g. after night then just before start if you remove header tank cap you will find that system is under pressure. Any ideas? Regards Rob