Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

This guide covers how to change spark plugs and ignition coils on a 2017+ Toyota Camry equiped with a 2.5L 4 Cylinder A25A-FKS Engine. This engine is shared with the 2018+ RAV4, Avalon, and Lexus ES 250/260 so this guide may work for those vehicles as well.

This really is a pretty easy project, so I recommend giving it a try yourself if you've got the tools. Iridium tipped spark plugs can last up to 120,000 miles.

Required Tools

9/16" deep spark plug socket
3/8" extensions
3/8" ratchet set w/ 8mm socket
4mm or 3/16" Hose (see hose trick below)

Required Parts

4x Denso FC16HR-Q8 Iridium Spark Plugs Toyota 90919-01289
Ignition Coils Denso 90919-A2009

Step by Step Instructions

Remove Engine Cover

1

Remove the engine cover. It's foam, and it just pulls off.

Image 8838 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

Here's a photo of the back for reference.

Image 8839 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

2

Locate the 4 ignition coils.

Image 8840 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

3

Separate the electrical harness connector on each ignition coil you plan on removing.

As always, be careful with plastic connectors. As the car ages, the plastic tends to get more and more brittle.

Image 8841 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

4

Remove the 8mm screw on each ignition coil

Image 8842 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

Image 8843 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

Image 8844 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

5

Remove the spark plug. You'll need a 9/16" spark plug socket, extension, and a ratchet .

I was able to use a plain 9/16" deep socket without any issues because I use a hose to install the new plugs. That negates the need for the rubber fitting in a spark plug socket to keep the new plugs from falling onto their electrodes.

Image 8845 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

Image 8847 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

Image 8846 from Replace the Spark Plugs and Ignition Coils on a 2017-up Toyota Camry

6

Install a new spark plug.

I use a 4mm (3/16") hose that slips onto the end of the spark plug fairly snug.

Slide the spark plug into the end and and lower it into the head.

The hose grips the plug lightly enough that it just allows you to rotate the plug a few threads in to get started without allowing you enough force to cross-thread it.

7

Install ignition coils.

They just slides into the hole easily. Give the coil a firm press down to make sure it seats fully onto the spark plug.

8

Install and tighten the 8mm bolt on each ignition coil.

9

Install the electrical connector to each coil.

10

Install the engine cover.