Kia Forte Misfiring - Ignition Coil Swap! 2014 - 2017 (FIXED) 

Check timing chain tension by removing valve cover. If chain slack between camshaft phaser gears, tensioner unit is stuck. Use long screwdriver to jiggle tensioner plunger until it pops out against rear guide. Tensioner plungers stick due to varnish buildup on plunger. Seafoam or other cleaner treatment will dissolve varnish, freeing stuck plungers. On this engine, verify timing by turning crankshaft clockwise until yellow chain link aligns to yellow dimple on exhaust (rear) phaser gear, crank at top dead center as indicated by crank pulley edge notch aligned on 0 degree index on timing cover, and 2nd yellow chain link aligned with front intake phaser gear dimple. The 3rd yellow chain link will be aligned with dimple on crank gear at about 4o’clock position, not visible since timing cover is installed. Multiple turns of crankshaft will be required to find this setup, due to more links on rear arc of chain, compared to number of links on front arc of chain.

Someone also said don't drop those in which is right but if you don't have a actual spark plug socket that's basically the only way you can do it or you have a magnet and try to guide it in there. If you have the spark plug socket then stick it in there and guide it down in and tighten it at first. I've never used all that grease before either because there's no way for any spark to go up that boot from the outside once you hook it in. Basically when you're doing it thank goodness it's set up now the way it is you don't really have to worry about wires and which wires what Even if it's 4 cylinder so once you get going on it you'll realize hey I need this here and this right here.

There's no order to put in the spark plugs in the order is about putting the connectors back in in the right order. Connecting to the coil packs.

Definitely do not over tighten I busted a few of those couple of times and many times have changed spark plug sometimes you don't know your own strength lol

no grease on tip of plug, never drop plug into hole,

Update - Been driving it past 100 miles. Issue is gone and now runs smoothly 💯/💯 posting up new video soon

Tighten down quarter turn

And also because I had this same problem it was also needed to get the throttle body cleaned and there's a map sensor that needs to be changed that detects air intake. To be honest with you they're just way too many senses on these cars now. There's also a sensor that I can't remember the name right now that's I think manifold right now because not thinking right there's a intake to the manifold and exit to the manifold I know it has something to do with oil I only knew the one and I changed that but now I'll come to find out this one on the back side going out which doesn't make sense It's just one of those things thank goodness for Google and you can figure this and that out and on the Kia it's not so hard to replace it's all about having the money to get these things to do it Any other is check all your hoses vacuum hoses these cars are ridiculous these days

So did you say this is a recall, or just a common occurrence?

Do you happen to know the gap for the plugs? I can't find it anywhere.

When you think you fix one thing Here comes the other

L loop