Lexus CT200h Spark Plugs Replacement

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Introduction

*For experienced mechanics*

This guide demonstrates how to replace the spark plugs in a 2014 Lexus CT200h. It may also be applicable to other model years in the same generation (2011–2017).

Replacing the spark plugs are really important as it ensures that your engine is running smoothly.

Before beginning the repair, shift it into park and turn off the vehicle.

What you need

Step 1 Spark Plugs

Lexus CT200h Spark Plugs Replacement, Spark Plugs: step 1, image 1 of 1

Use a socket wrench to loosen the terminal bolt.
Disconnect the negative ground cable from the battery.

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Step 2

Lexus CT200h Spark Plugs Replacement: step 2, image 3 of 3

Disconnect each of the four spark plug wires by hand.

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Step 3

Lexus CT200h Spark Plugs Replacement: step 3, image 3 of 3

Use a 3/8-inch ratchet with a 10 mm socket or an impact socket ratchet to remove the ignition coil bolts.
Pull the four coils out to remove them.

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Step 4

Use a 3/8-inch drive ratchet with a 6-inch (or longer) extension and a 14 mm (9/16-inch) thin-wall spark plug socket to loosen the four spark plugs.

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Step 5

Once you've loosened the spark plugs, remove them by hand.

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Step 6

Lexus CT200h Spark Plugs Replacement: step 6, image 3 of 3

Insert the new spark plugs and use a 3/8-inch drive ratchet with a 6-inch (or longer) extension and a 14 mm (9/16-inch) thin-wall spark plug socket to tighten them.

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