Theinjectorsarenowremovedfromtheflowbenchandareinstalledintotheultra-soniccleaning tank whichcontainsaspecialcleaningsolutionformulatedforinjectors.Heretheinjectorsarepulsedatvaryingpulsewidthswhilebeingsubjectedtoultra-sonicwavesthat breakupthathascollectedontheoutsideandinsideoftheinjectoroutlet.Thisprocessisperformedforaminimumof30minutesdependingupontheconditionoftheinjectors.