On a 2007 Kia Sorento with a 3.8-liter engine, the spark plugs are located under the engine cover, which you will need to remove first. Once the cover is off, the spark plugs can be found on the top of the engine, near the intake manifold, and are accessed by removing the ignition coil assemblies. Each spark plug is situated in a cylinder head, with one spark plug per cylinder.
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