Thanks for the reply...
I pinched 3 from a scrapped Bravo for the grandly sum of £7... for the lot
It was the injector on cylinder 1... so replaced it and the car is running perfectly now.
But as a side topic found out their the same type of injectors as in the Seicento MPI... but are larger... so am gathering a few more and will fit them to the Seicento to see if it goes any faster