There are 3 in the front, but the other three, you have to take the intake manifold OFF the car,,, big job. Bob in AZ
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Changing spark plugs is relatively easy. Disconnect the batter and spark plug cables, and remove the old spark plugs. Next replace the spark plugs with new ones, reconnect the spark plug cables and battery.
In a 2005 Kia Sedona, the spark plugs are located on the engine's cylinder head. To access them, you'll need to remove the ignition coil assembly, which sits on top of each spark plug. Once the coils are removed, the spark plugs can be unscrewed using a spark plug socket. Ensure the engine is cool before starting this process to avoid injury or damage.
They Are under the Intake manifold like on my 04 kia sedona, You have to removethe center part of the manifold.
To replace the spark plugs from a 2004 Kia Sedona the plug wires ,must be removed from the engine. Unscrew the plugs. Properly space the new plugs and screw them in.
It cost me over $450 at the dealer. This is due to the fact that they must remove the intake manifold to access the back 3 plugs.
On a 2005 Kia Sedona the coil packs are over the front 3 plugs. Wires go to the rear head.
How to change the spark plugs
Remove the upper intake, then proceed as with the other plugs.
A 2005 has 3 coil boots on the front head, and 3 wires w/boots for the rear plugs.
NGK platinum plugs
You spend 340.00 paying the dealer to take half the engine apart so that there is access to the spark plugs. Other than the access problem there is nothing different about changing Kia Spark plugs.