Spark Plug Replacement DIY (the ULTIMATE Guide)

Spark Plug Replacement DIY (the ULTIMATE Guide)

About the Author: Michael Flood


  1. By the way if you shop at Advance Auto and use the code "SPARK" at checkout, you will get 25% off your entire order (order anything, not just plugs) from 6/21 – 9/30. *I do not make a penny from this. I literally asked Advance Auto for a discount for my Subscribers (and I use it too lol). I hope that helps!

  2. I'm gonna give this all a go tomorrow. I tracked a ticking noise to one of the spark plugs. Put my hand on it and it stopped ticking. Assuming it's loose or needs replacing. However, this video has convinced me to check the state of all my plugs and give it a go. I have a spare set of OEM plugs. Thanks to all your vids ChrisFix, I've been servicing my car, my folks and my siblings cars. Your videos/instructions are PRO! A+ Cheers dude… From Melbourne, Australia.

  3. Hi Chris, great video. Some plugs come pre-gapped as you stated (iridium, platinum). Sometimes that pre-gapped plug has a larger or smaller gap than that listed in the car manual. Assuming the new plug is gapped as stated on the box, should I adjust the factory gap to the gap listed in the manual or leave it as is came from the factory? For example: new pre-gapped plug is .44 where the manual states to use .36. Should I close the gap to .36 or leave .44? Thank you for your time.

  4. He says" I'm getting bad fuel economy" wow you are driving a Mustang not the most fuel efficient car in the world

  5. Thanks for your informative videos ChrisFix!!! Before this I used to take my car to a mechanic for most of the basic maintenance but thanks to your videos I now know that it's not hard at all to change most of the things in a car!!! you are legit 🙂 Keep it up

  6. How do you kown you're using the right amount of torque? Is there a meter on the wrench or is one click considered 15 torque pounds?

  7. Had no idea I was also going to see how to change the spark plugs for my '17 WRX STI in this video. Thank you for the thorough guide. The compressed air shot to the hole is something I wish I knew back when I had my integra

  8. My dad is always using the same old fucking spark plug in his chainsaw. Now I know how to replace it in a car and I can help my dad identify the broken plug.

  9. Hi Chris. Thank you for your videos they help me a lot. If you don't mind can you make a video on how to replace spark plugs for a frs/brz? Thank you.

  10. 7:12 That's not what wasted spark means. In a wasted spark system, the spark plugs fire in pairs, with one plug in a cylinder on its compression stroke and the other plug in a cylinder on its exhaust stroke. This reduces the number of components needed and the "wasted" spark has no impact on the lifespan of the plugs and wires.

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