My daughter has my old 1.4 07 auris. Yesterday went on 3 cylinders. Diagnosis showed misfire on cyl 1. Changed plugs and put new Delphi coil on that cylinder. Started on 4 cylinders and fault cleared. Driving down the rd had a constant hesitation but no fault showed. Then onto 3 cylinders. Put on diagnostics and shows misfire on cyl 1. Has she fried the new coil or possible injector?