It does sound like a stuck injector, you could just have dirt in it and need to be cleaned or you may have to replace it. I would pull it out and clean it real good with a spray injector cleaner. I took all mine to a shop that specializes in cleaning injetors and the Kia injectors are so uninc that they don't fit on any of thier machines.

Good luck, Dennis

95 Sportage, gone but not forgotten.
98 Jeep TJ, 4" Zone springs with RC Long arms, Ford 8.8", 4.56 gears & Detroit locker rear, D30, 4.56 & Detroit Trutrack front.