Clean the area near the spark plugs and around the ignition coils. Remove any dirt near the spark plugs in order to avoid it from falling into the cylinders latter.
Use a 10 mm socket to loosen the bolt that secures the coil in place. The Theta II Kia/Hyundai engine uses a coil-on-plug design.
Unplug the ignition coil connector by pressing the locking tab and then pulling the connector away. Once the bolt and connector have been removed, pull the ignition coil up.
If the ignition coil refuses to come up, try twisting it slightly, then try lifting it up and out.
Blow dirt away from the spark plug recess before you remove the spark plugs. Use a 16-mm spark plug removal tool, ratchet, and a 3/8" extension to remove the spark plugs from the engine.
Rotate counterclockwise to remove the spark plugs. You may need to use a magnet tool to pull out the spark plug.
It is time to install the new spark plug. It is a good idea to check or at least inspect the gap using a spark plug gapping tool.
Certain spark plugs may come pre-gapped, while certain plugs should not be gapped. It is recommended to use an anti-seize lubricant on the spark plug threads.
Install the new spark plugs by hand and then tighten them using your ratchet. Do not overtighten the spark plugs, or you may strip the threads. If you have a torque wrench handy, tighten to spec. Check out the torque specs below.
To change spark plugs Hyundai 4-cylinder engine, you will need one to two hours. Replacing the spark plugs yourself can save you money.
Spark Plugs: 11- 15 lb-ft (Verify by calling your dealer)
We hope that you found this guide on how to change spark plugs in the Hyundai Kia engine useful. Please use the comments section to provide feedback or just leave a comment.
Hyundai Spark Plugs Replacement Cost
Replacing spark plugs on the Hyundai vehicles listed here will cost you on average less than $30, assuming you already have the tools. If a mechanic at your local repair shop changes, your spark plugs expect to pay between $150 to $250.