Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 1992 Chevy K1500 Stumbles › Reply To: 1992 Chevy K1500 Stumbles February 16, 2020 at 8:34 am #913803 Richard KirshyParticipant Just spit ballin’ it here … Have you checked for vacuum leaks. Perhaps smoke the system. Have you checked the operation of the fuel pressure regulator. Possible injector issue…