Replacing Spark Plugs going with NGK Iridium IX?

2014 KIA SOUL

120,000 MILES • 2.0L • 4 CYL • 2WD

BOSTONBOATSWAIN

MEMBER
45 POSTS

Replacing Spark Plugs - going with NGK IRIDIUM IX (don't need longevity of the Lasers)

Thought I use 3/8 socket to remove plugs but keep seeing multiple #'s.

Can someone please tell me what I need to buy? 14mm ...16mm...3/8...5/8 .. ?/16????

Completely lost.

Thanks,
Diane P

Aug 31, 2024 at 3:43 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

5/8-inch (16mm) Spark Plug Socket: This socket size is standard for many spark plugs, including the NGK Iridium IX that you're planning to use. Here is how the job is done correctly in the images below. I would replace the ignition coils as well and service the throttle body.

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

and

https://www.2carpros.com/articles/throttle-actuator-service

Check out the images (below). Let us know if you need anything else.

Images (Click to enlarge)

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Aug 31, 2024 at 5:49 PM

BOSTONBOATSWAIN

MEMBER
45 POSTS

With the pics, instructions and videos, I'm able to do all 3 by myself. Thanks!

Aug 31, 2024 at 9:10 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Good to hear, please use 2CarPros anytime we are here to help :)

Sep 1, 2024 at 10:50 AM