UPDATE...... I have now totally given up on dealers for this issue !!!Evidence suggests most are of the 'make it up as you go a long brigade' Self help prevails. I have now discovered an intercooler pipe to the manifold had a very loose hose clip to the extent that oil was leaking from the front valance below the intercooler on the offside of the car. I also isolated the vacuum pipe on the inlet manifold flap actuator and guess what ??? No noise at all. To double check I then re-connected the vacuum hose started up, placed a large screw driver to my ear while the blade rested on the manifold flap housing, without doubt this is where the noise is. Now for the big question ?? is it the manifold flap and / or vacuum actuator at fault, maybe, but Ford want