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Hyundai Accent Engine Spark Plugs Replacement Guide
How to check or change the engine spark plugs in a 4th generation 2011-2015 Hyundai Accent with the 1.6L I4 motor.

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2013 Accent 1.6L I4
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Pull Off Plastic Engine Cover
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Engine Cover Removed

This automotive maintenance tutorial was specifically written to assist owners of the fourth generation (2011, 2012, 2013, 2014 & 2015) Hyundai Accent in checking or changing the engine spark plugs in the Gamma GDI 1.6 liter inline four cylinder motor.

Owners of other Hyundai or Kia vehicles such as the Tucson, Elantra, Sonata, Azera, Veloster, Tiburon, Genesis, Lavita, Veracruz, Santa Fe, ix20, i20, ix35, Fluidic Verna, Equus, Cadenza, Forte, Optima, Rio, Soul, Sedona, Sorento, Spectra and Sportage may also find these DIY instructions to be helpful.

The OEM spark plugs in this 2013 Accent are NGK Iridium part number SILZKR6B10E or SILZKR6B-10E.

A few other iridium spark plugs that should be compatible including their part numbers are as follows: Autolite XP6203 or XP5703, Hyundai 1884610060, Champion RC12WYPB4, Denso (3445) XU22HDR9 and Denso SC20HR11.

The tools needed to complete this procedure include a 10mm socket with a 1/4" drive ratcheting wrench, a 5/8" spark plug socket, an extension bar, a 3/8" drive ratcheting wrench, a spark plug gap gauge and a tube of dielectric grease.

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4 Ignition Coils Exposed
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Pry Out Grey Locking Tab
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Plastic Lock Tab Released
The first step is to gently pull off the plastic engine cover which is held in place by friction fasteners attached to four metal pegs on the top of the engine.

Set the engine cover aside in a safe place.

If you have access to compressed air or a wet/dry shop vacuum, thoroughly clean off the top of the engine to help prevent any debris from falling in to the cylinder when you remove a spark plug.

Then pry out the grey plastic locking tab on the electrical connector for the ignition coil. You may need a small flathead screwdriver in order to pull out the tab.

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Power Plug Release Tab
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Loosen 10mm Bolt
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10mm Bolt Removed
Push in the black plastic release button before sliding the electrical connector straight off the ignition coil.

Loosen the single bolt holding the ignition coil in place by turning it in the counterclockwise direction with the 10mm socket and ratcheting wrench.

Place the 10mm bolt aside in a safe place.

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Rotate Ignition Coil
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Lift Out Ignition Coil
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Spark Plug In Well
Rotate the ignition coil back and forth a few times to make sure that the rubber boot is not stuck to the top of the old spark plug.

Lift the ignition coil out of the spark plug well and set it aside in a safe place.

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Loosen Old Spark Plug
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Detach Wrench - Spin Out Plug
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Lift Out Old Spark Plug
Attach the 5/8" spark plug socket to a 6" extension bar and the 3/8" drive ratcheting wrench.

Lower the socket over the old spark plug and loosen it in the counterclockwise direction.

Try to avoid using excessive force to loosen the old spark plug to prevent from cracking the ceramic portion of the plug.

Spray a small amount of penetrating oil such as PB Blaster, Liquid Wrench or Kano Kroil and wait at least 15 minutes or more before attempting to loosen it again. If you don't have any penetrating oil, try spraying some WD-40 or warm up the engine for a few minutes to help expand the metal engine block.

Once the spark plug has been loosened, detach the ratcheting wrench and spin it out the rest of the way by hand.



 

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Inspect Old Spark Plug
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Lower In New Spark Plug
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Tighten Clockwise
Pull the old spark plug out of the socket and inspect it.

If the rubber insert from the spark plug socket is attached to the old plug, remove it and push it back in to the socket.

If the electrode end of the old spark plug looks ashy white, the plugs may have been exposed to high temperatures such as overheating or they may be the incorrect heat range for your driving conditions or environment.

On the other hand, if the old spark plugs are grey or covered in dark black soot, the engine may be burning oil and should be examined by a professional mechanic.

(An optional step is to apply some anti-seize grease to the threads on the spark plug. Most spark plug manufacturers recommend that you should not use anti-seize grease since it can lead to over tightening.)

Some mechanics believe that using anti-seize grease on the spark plugs will help prevent them from becoming stuck or "frozen" in to the cylinder head if they are not removed again for 100,000 miles.

I'd recommend buying the NGK SILZKR6B10E iridium spark plugs since they were the OEM part and they have excellent reviews on Amazon.

If you have a spark plug gap gauge, check that the new spark plugs are gapped to the manufacturer's specification listed on the box. They should be pre-set from the factory, so don't worry if you don't have a gap gauge.

Push the new spark plug in to the 5/8" socket. Your spark plug socket should have a rubber insert or a strong magnet to securely hold the plug in place.

Lower the spark plug down in to the well and spin it in by hand in the clockwise direction with the extension bar until it makes contact with the cylinder head.

Attach the 3/8" drive ratcheting wrench to the extension bar and tighten the spark plug in the clockwise direction to just past the point when you feel the new crush washer collapse.

If you are re-installing the old spark plug, tighten it to just barely past hand tight.

Do not over tighten the spark plugs to prevent from cracking the ceramic body or stripping the aluminum threads.

Double check that the new spark plug is tight before moving on to the next steps.

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Apply Dielectric Grease
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Lower In Ignition Coil
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Rotate Back & Forth
Apply a small amount of dielectric grease to the opening in the rubber dust boot at the bottom of the ignition coil.

The dielectric grease will help keep out any moisture or debris which will permit a stable electrical connection between the spark plug and the ignition coil.

Lower the ignition coil down in to the spark plug well and rotate it back and forth a few times to help distribute the dielectric grease.

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Re-Insert 10mm Bolt
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Tighten 10mm Clockwise
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Push On Power Plug
Re-insert the 10mm bolt in to the ignition coil and tighten it in the clockwise direction until it is snug.

Try to avoid over tightening the 10mm bolt to prevent from cracking the plastic ignition coil housing.

Push the power plug straight on to the ignition coil until it clicks securely in place.

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Push In Grey Lock Tab
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Push On Plastic Engine Cover
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Spark Plugs Replaced
Push in the grey plastic locking tab to secure the electrical connector.

Line up the friction fasteners on the bottom of the plastic engine cover with the metal pegs on the top of the engine.

Push the engine cover in to place. Check that it is securely attached to the engine.

Start the engine and listen for any strange noises that may indicate a problem such as a loose spark plug or a loose electrical connector.

Be sure to record the spark plug change in your vehicle's service records.

For more, check out my other Hyundai Accent DIY Repair & Maintenance Guides.
 

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