The scanners we use just pull the codes, if it's not throwing a code on a certain cylinder then it's a random misfire and it's most likely just old plugs.
Edit: that's just a random misfire code, a different scanner won't do you any good unless the car throws another code that's specific to a certain cylinder. Start with plugs and check all your wires and Coils to make sure they're all clean and what not.
Sent from Tapashit