I changed plugs 1997 rav was. Running a little rough. Idling up and down. Still rough. Got code. Reader and forgot code # but it was # 1 cylinder misfire. Started driving back from buds then it started to surge like crazy. Changed cap and rotor. Same thing. Barley moving. Changed wire to cylinder. Same thing. Getting code reader to see if it still says #1 cylinder misfire. Help please.