ust to let everybody know problem sorted.i recleaned maf with carb cleaner,for my own piece of mind ,i also resealed gasket on throttle body for the same reason,now heres the strange bit ,directly below throttle body there is an electrical connector going to that particular injector,it didnt seem to be fully clicked into position,all back together running at 850-900 at idle respose smoother and better pick up,think that connection might have been switching between on/off and other three compensating for it causing high idle?
