Starting Problems

Just to give this a bit of closure, i believe I have fixed it. I discovered the fuel pressure regulator was leaking. Stupid me thought I had an oil leak as the stain on the driveway was black like you would expect from an oil leak from a td5. It must of been washing some of the minor weeps off. Anyway the fuel block has been replaced and I have run the fuel level down to about a quarter of a tank, left it over night and it's started without any problems, so I am guessing its solved.

Thanks to those who had some suggestions as to what it may have been. It is truly appreciated.