Hi all found out today what the problem was with my 2004 series 1 aero 8

Had a guy Come around today he said he has seen this before on a BMW X8 he said the stainless Fuel rail pipe is about 17 mm diameter and air can get trapped and it takes an age to get all the air out there is a port on the fuel rail this is used to create a vacuum if air gets in the fuel line

We created a vacuum with a hand pump and then tried it again it fired up right away sounds beautiful I made up a couple of side mufflers from scratch and fit the side exhaust forgotten what it sounded like

Hope fully this may help anybody with the same scenario

Thanks all for your help

PS is there any body that can offer some colour choices as I am going to get it painted in the next month