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2010-2015 Hyundai Elantra Spark Plug Replacement

Hello, in this guide we will replace the spark...

iFixit Library 2010-2015 Hyundai Elantra Moderate 30 minutes Guide 168211

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Guide overview

Before you begin

Hello, in this guide we will replace the spark plugs in a 2011 Hyundai Elantra. The spark plugs within your vehicle ignite the fuel and air by providing a spark that allows the internal combustion engine to function correctly. Having worn-out spark plugs can lead to issues within your vehicle, such as losing power, rough idling, engine misfiring, and slow acceleration. Whether your engine has any of the symptoms listed above or you are conducting a routine tune-up in your vehicle, this guide will show you how to replace your spark plugs using simple steps and images to ensure a quick and easy replacement. While following this guide, disconnect the battery entirely in step 3, as having the battery connected while working on your vehicle can lead to harm or injury.

Step 1

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Make sure the car is off and cooled down entirely by allowing the car not to be in use for at least two hours or more.

Step 2

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Open the hood by pulling upwards on the lever found by the lower left side of the driver's seat.
Lift the hood with your hands by opening the latch that holds the hood down.
Prop up the hood stick to hold the hood open.

Step 3

Repair step

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Loosen and remove the nut next to the battery terminal using the 10mm socket attached to the wrench.

Step 4

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Move the power supply cable aside carefully and wedge it between the battery.

Step 5

Repair step

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Remove the engine cover by placing both hands on each side and placing it aside from our work station.

Step 6

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Unfasten the lock pins from the electrical connectors and place them aside by the battery.

Step 7

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Unscrew the four screws from the ignition coils using an 8mm socket attached to a wrench.

Step 8

Repair step

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Remove all four ignition coils and keep them in order as you remove them outside of our work station.

Step 9

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TOOL USED ON THIS STEP Magnetic Pickup Tool Referenced by the iFixit guide

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Loosen and remove spark plugs with a ⅝ long socket with an eight-inch socket extension and wrench.
Use a magnetic pickup tool to remove the spark plugs.

Step 10

Repair step

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TOOL USED ON THIS STEP Magnetic Pickup Tool Referenced by the iFixit guide

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Insert the new spark plugs gently to avoid damaging them using the magnetic pickup tool.

Step 11

Repair step

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Use the 5/8 socket with an 8-inch extension attached to a wrench to tighten the spark plug, without breaking the spark plug.

Step 12

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Insert ignition coils into their designated places.

Step 13

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Insert and tighten screws for the ignition coils using the 10 mm socket attached to the wrench.

Step 14

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Connect all four electrical connectors and lock them back into place.

Step 15

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Place the engine cover back into its designated spot.

Step 16

Repair step

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Reconnect the battery by moving the power supply cable back into its terminal.
Tighten the nut back alongside the terminal using the 10mm socket attached to a wrench.
Close the positive terminal battery cover and ensure it is properly closed.

Step 17

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Place the hood stick back into its designated spot and gently close the hood.