Question about 2003 Kia Optima

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Where are the spark plugs on my 2003 kia optima located.

I want , but to change the plugs and took off the plastic cover on top of the engine but cannot find the plugs.

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  • Anonymous Jan 31, 2009

    I have the same problem but on a 2003 KIA Spectra. Can't find the spark plugs.

  • Anonymous Mar 01, 2009

    where are the spark plugs 4 cyclinder help

  • Anonymous Mar 15, 2009

    where are the spark plugs in a 03 optima

  • petersone2 May 04, 2009

    car wont start due to water raching the floor of the inside of the car?



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Take off the top cover. There is 2 coils take off the coils (there is a spark plug under them and a wire from each coil runs to the other plugs.

Posted on Apr 20, 2009

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  • 120 Answers

Trace the high tension wire that runs from the distributor. the other end should be attached to the spark plugs.

Posted on Dec 29, 2008

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Remove the engine cover

Posted on Mar 14, 2009

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1 Answer

Where are the spark plugs on a 2002 kia spectra


It depends on the model. Kia Spectra comes with engines that ranges from the 1.5, to the1.6, 1.8 and 2.0 liter models. Most engines have the spark plugs located on top of the engine block under a plastic cover. Under the plastic cover you may find the plugs or two coil packs. In the last case the plugs are located under the coil packs.

Jul 14, 2011 | Kia Spectra Cars & Trucks

1 Answer

I can not find the location of the spark plugs on my 2005 Kia Optima. It's a 4 cylinder.

They are located underneath the coils on top of the valve cover or valve covers if its a V6. You cant see them untill you remove the coils from the top of the valve cover. Look down in the hole and you will see the Spark Plug. Good luck.

Jul 13, 2011 | 2005 Kia Optima

1 Answer

Where are the spark plugs located on a 2006 kia optima

Remove the plastic ocvers over the valve covers and then remove the coil packs. This will give you direct access.

May 10, 2010 | Cars & Trucks

2 Answers

Where are the spark plugs located on an 04 kia optima

This is general car knowledge. An 04 kia probably has individual coils for each plug on the valve cover. Remove the screws holding the coil on the valve cover, gently pull/twist off (stuck like a cork) plugs should be down deep in cylinder head. Modern engines have iridium (100,000 mi) plugs. Yours could be this ,check the stickers in engine bay.

Mar 10, 2010 | 2004 Kia Optima

1 Answer

Ignition failure sensor

there is such a part on the 2006 is located under the plastic cover on the upper right side of the motor

Oct 19, 2009 | 2003 Kia Optima

1 Answer

How to change spark plugs in 2003 kia spectra

undo bolts on plastic cover on top of motor,unplug spark plug wire 1 at a time, thats going in the top of motor,u will need a spark plug socket wrench with extension shaft,check electrode gap before installing new plugs!

Jun 14, 2009 | 2003 Kia Spectra

1 Answer

Need to locate spark plugs on 05 Optima, can't seem to do so. Also need gap size for plugs.

Four bolts on that big plastic thing - 10mm, if I recall - and the cover over the engine comes off. Two are obvious, the other two are covered by coil assemblies. Not hard - though a tiny bit more work than older cars.

Apr 20, 2009 | 2005 Kia Optima

1 Answer

Changing back spark plugs underneath engine cover

I'm fairly certain those motors require the upper intake manifold be removed to gain access to the rear spark plugs. You might be better off bringing it to a qualified technician as it gets fairly involved. If i remember correctly it's about a 2 hour job and requires a few gaskets.

Apr 16, 2009 | 2003 Kia Optima

2 Answers


The 2003 Kia Sorento with V6 has the spark plugs located under black plastic covers in the center channel of each cylinder head. Several brackets, cables, and hoses must be moved out of the way to access them. The manifold air intake tube needs to be removed on the right bank.
The left cylinder bank has coil-on-plug assemblies while the right bank has more conventional spark plug caps with sealing assemblies. The coil-packs are held with two 10mm bolts each and are difficult to get to. Use universal-joint sockets and an extension.

Apr 06, 2009 | 2004 Kia Optima

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