Question about 2002 Kia Rio
Idles rough, ok at higher rpm . plugs look like fuel is rich
Could be many things but it sounds like your idle air control valve. It should be on top of the throttle body. I'm not sure on this vehicle. It is a accordian like diaphragm in a housing, They get clogged with carbon. Usually attached with 2 bolts and a sensor connector. Easily cleaned out with carb. cleaner. This will throw a code if the diaphragm is letting too much or too little air in to the fuel mixture. It may also be a vacuum leak. You can spray very short burst of ether around the intake manifold, if the engine races you have a vacuum leak. I have never had a fire but have always had a fire extinquisher within reach . USE COMMON SENSE.
Good luck. p.s. DON'T SMOKE AND KEEP CHILDREN AWAY!
Posted on Jan 23, 2013
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Posted on Jan 02, 2017
SOURCE: 2002 KIA Sedona running rough
i may have an answer for you i have an imported v6 3.8 it has recently developed similar problem, i have been looking on www.kiatech.com whcih is very informative, there is a technical bulletin on my model (06) that refers to possibility of faulty o2 sensors which may or may not be the cause of the problem, it also gives me part numbers, check out the site look up your own model it may give you the answers
you can check out the main manuls or look up past technical bulletins (tsb)
Posted on Mar 24, 2009
this vehicle has coil packs for the ignition correct? have you ran the engine at night with all surrounding lights outs so its really dark. spray a mist of water on the coil packs and spark plug wires to see if you have spark/voltage leaks jumping out from them. sometimes the tiny sparks will be so fine and skinny you can barely see them so it needs to be dark. hope this helps your trouble shooting. a coil pack could have such a fine crack for the voltage to leak from that you cant see it.
Posted on Jun 13, 2009
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