2008 Kia Rio5 sx cylinder misfires - Kia Forum
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#1 (permalink) Old 02-05-2011, 10:39 PM
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Default 2008 Kia Rio5 sx cylinder misfires

Hey guys,

Ok, so its not the spark plugs. My next guess is wiring or the sensors. Car's got 71 K on it. Cylinder 1, 3 are misfiring. Should still be under warranty up to 100K right?

Fuel injector fluid to clean up the cylinders... What do you guys think for a quick fix till I can get it in the garage?

Thanks..
Cris
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#2 (permalink) Old 02-06-2011, 12:07 AM
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I wouldn't count on it being under warranty, although it may be. How do you know it's not the plugs? Your 1.6L should be individual coils, could be them, or wiring. Also may be fuel related as you mentioned. There have been several reflashes on the Rio for misfiring issues. There are two ways to find out if your car applies: 1) Call the dealer and give them the VIN, they can tell you if there are any updates available. Or 2) get ahold of a scan tool that can read you PCM ROM ID, then compare it to the updated ROM ID's listed in the TSB's on www.kiatechinfo.com.
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#3 (permalink) Old 02-06-2011, 03:06 AM
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Happens every winter and spring, have you got condension water/moisture dripping from the engine cover, compromising the ignition wires, causing a misfire?

Try either spraying the wires with silicone spray while the engine is hot and OFF, or replace the ignition wires.

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Last edited by jcwit; 02-06-2011 at 11:04 AM.
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#4 (permalink) Old 02-06-2011, 07:46 AM
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Thanks! its a 1.8 L, definitely going to call first thing tomorrow. Service always gives me the shaft when it comes to fixing anything on my car. Thankfully its been pretty good to me these last 3-4 years.

Drive it like you stole it.
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#5 (permalink) Old 02-06-2011, 07:49 AM
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JC - Not that i've noticed, but I'll keep an eye out for that as well. Anything that will save me from taking it in for svc is a huge help.
enjoy the rest of the weekend.

Drive it like you stole it.
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