Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Dealer Changed plugs and wires and now runs rough?? › Reply To: Dealer Changed plugs and wires and now runs rough?? November 24, 2020 at 9:54 am #987171 Charles CravenParticipant this is not a Flex. They did the injector cleaning i believe. If a incorrect plug, wire or bad gap, would it not show? The computer shows it firing.