Need to check the coil wire, and all other ignition parts.
Fuel injector?, wire? manifold leak?
If cylinder one is misfiring on the Kia Sportage 2.0 it could be that the spark plug in that cylinder needs to be changed. It can also mean that the piston in that cylinder is sticking.
it depends on what kind of 6 cylinder but it can be the module the coil packs or the distributor It's on a '96 V-6 Pontiac Firebird. I'm thinking it could involve the ECM or an injector could not be pulsing. But how do I check and fix both?? I changed my coils on my 98' Camaro three times, they run about $35.00, the number 5 and 6 cylinder coil should be the last one when looking under the hood right over the right valvecover.
If you have changed all the Plugs, wires and coil pak then look at the fuel injector on that cylinder. Might be a good idea to replace them all. Should clear it up. My 99 B3000 had the same problem. The key was my fuel comsumption. As long as I held the RPM's above 2000, it ran fine. Ideling was a little shakey.
have misfire on #5 on a ford f150 4.6. changed spark plug and coil pack and injector.
You need to check compression on #6.
Low compression in a cylinder, a burnt valve, loose plug or plug wire, bad injector, bad electronics.
vacum leak
The plug, wire or coil could be the problem. Usually if the injector is failing you will get different codes. I just replaced plugs and wires from a 2002 and they were in very bad condition. The van had 90,000 or so miles on it. When these were changed it ran like a new van. The back three plugs were just awesome. (sarcastic) That is another issue though. Good luck. See "Related Questions" below
check the coil pack
You may have a bad fuel injector. Try to single out which cylinder is dead, then remove that spark plug, if the plug is clean and dry you have a faulty fuel injector.
Check your TPS and O2 sensors. Could be a bad thermostat. My 94 did that ,changed it and solved problem.