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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.
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.
How to change the spark plugs
On a 2005 Kia Sedona the coil packs are over the front 3 plugs. Wires go to the rear head.
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.
Both V6 engines have 6 spark plugs