Mitsubishi Repair: 91 Mitsubishi Montero running on 5 cyl.?, mitsubishi montero, vacuum leak

Question
i have a 91Mitsubishi Montero it runs and drives but it has a miss in it .its like its running on 5 cyl. or something ..timming checked out fine new plugs,wires,and pressure test at 100pounds plus,any thing you could thing of would help

Answer
Quincey: when you did the stark plugs and wires, did you also replace the distributor cap and rotor? Could be one your stark plugs is bad, or not gapped right. Try cleaning the injectors. Could be a faulty emssion system components. Maybe a vacuum leak someplace. I hope one of these things helps you. Good luck! Linda