Hi Tony
Thanks for your reply, sorry for late reply dont have internet at garage. I too would of thought that 3.5 bar would start the car. When i had the fuel filter housing out on the pressure regulator it had 4.55 bar stamped on it. Also on the regulator on the fuel rail it had 3.5 bar stamped on it. Im assuming that the one on the filter housing is faulty as im only getting 3.5 bar. All i can think is that there isnt enough pressure to atomise the fuel correctly and its wetting the plugs. I think im going to have to bite the bullit and buy a new filter housing and hopefully that will sort it.

Regards Jamie