Changing Spark Plugs on 2001 4cyl - Kia Forum
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#1 (permalink) Old 04-23-2010, 05:19 PM
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Unhappy Changing Spark Plugs on 2001 4cyl

My step-dad went to change my spark plugs in my 2001 Kia Optima 4 cyl and can't seem to find them. Where the heck are they and how do you get to them? We have no owners manual.
Thank you so much!
PS...HATE this car, been nothing but problems since day 1!
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#2 (permalink) Old 04-24-2010, 12:14 AM
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Welcome to the KIA forums. Not sure on your particular car but most likely there is an engine cover that sits on top of the engine , that has to come off and the plugs and leads will be under there.

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#3 (permalink) Old 04-27-2010, 07:12 AM
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P86 is correct, I have a 2002 4 cyl Optima.

Remove the 4 bolts that hold the engine cover on.

On top of the engine you will see 2 ignition coils, each one has 1 wire going to it leading to a spark plug.

That's 2 of your plugs, the 3rd & 4th plugs are right under the ignition coils themselves.

2 bolts hold each coil on. I believe it's a 10 mm socket that removes the bolts. Just remove them and pull the coil straight up.

If the plugs are the original Iridium ones you remove them with a 13/16" spark plug socket.

If the plugs are the regular resistor type you remove those with a 5/8" spark plug socket.

Either way you'll need an extension on the socket as the plugs are recessed.

Torque the new plugs to 15 - 21 ft-lbs.

Good Luck.
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