Tales from the Engine Compartment:
Removal and Replacement:
The back three plugs are a bear to get to since you have to take off the Surge Tank. This happens to be connected to every other system in the car in one way or another and requires disconnecting about 7 hoses just to get it to lift up enough to get at the plug holes. The back middle Surge Tank mount bolt is hardest to get to and I know it will be hard to put back in. KIA must put crap stock wires in there. I found cylinder #3's fully scored with arc marks on the outside. Going to replace with some Belden lifetime wires later today, plugs too natch.
Parts: Plugs- easy to find anywhere. Wireset- special order almost EVERYWHERE. Autozone, PepBoys, Checker, BAP. Two of them didn't even have it listed, the other two had a two day delivery time. Pricing anywhere from $40 to $90. NAPA's main warehouse has them and are open today however NAPA's franchise model doesn't lend itself well to "let's check if another store has it" I guess. PEP BOys guy told me to go straight to the NAPA warehouse for the parts.
Anyway, just sharing my experience since the net is slim on DIY KIA info.
ALso, I got a week's subscription to kiatechinfo.com. Going to save all the HTML's I can but I have to admit the quality of KIA's own publications pales to that of a HELM manual. ENglish isn't bad but it definitely was written by and ESL person. Low on detail, no numbered steps. Pictures are really just hand sketches with little blurbs below them that may or may not correspond to that particular picture. I hope Helm's comes out with a manual for this model soon. KIA has half-assed their own documentation badly and they shouldn't be charging for it.