Fix Your Stuff Community Store

Free Shipping on Domestic Orders $75+

2019 Mazda CX-5 Spark Plug Replacement

Introduction

This guide shows how to replace the spark plugs on a 2019 Mazda CX-5 (2.5L Skyactive). Allow the engine to cool completely before beginning. Working on a warm engine may cause burns or damage the aluminum cylinder head threads. Reassembly is the reverse of removal.

What you need

  1. 2019 Mazda CX-5 Spark Plug Replacement, Remove Engine Cover: step 1, image 1 of 2 2019 Mazda CX-5 Spark Plug Replacement, Remove Engine Cover: step 1, image 2 of 2

    • Remove the engine cover by firmly pulling upwards to release from mounting grommets and set aside.

    Edit
    Ask FixBot

  2. 2019 Mazda CX-5 Spark Plug Replacement, Disconnect Ignition Coils: step 2, image 1 of 1

    • Press the locking tab down and pull each ignition coil connector straight back to disconnect from ignition coil.

    • Do not pull on ignition coil connector cable.

    Edit
    Ask FixBot

  4. 2019 Mazda CX-5 Spark Plug Replacement, Remove Ignition Coils: step 3, image 1 of 3 2019 Mazda CX-5 Spark Plug Replacement, Remove Ignition Coils: step 3, image 2 of 3 2019 Mazda CX-5 Spark Plug Replacement, Remove Ignition Coils: step 3, image 3 of 3

    • Remove the bolt securing each ignition coil using an 8mm socket, then pull the coil straight upward to remove it from the spark plug well. Set aside.

    Edit
    Ask FixBot

  5. 2019 Mazda CX-5 Spark Plug Replacement: step 4, image 1 of 3 2019 Mazda CX-5 Spark Plug Replacement: step 4, image 2 of 3 2019 Mazda CX-5 Spark Plug Replacement: step 4, image 3 of 3

    • Remove spark plugs by using a 14mm spark plug socket, extension and ratchet wrench, turning counterclockwise.

    • Check spark plugs for signs of fouling and any other irregular wear indicators.

    Edit
    Ask FixBot

  6. 2019 Mazda CX-5 Spark Plug Replacement, Install New Spark Plugs: step 5, image 1 of 2 2019 Mazda CX-5 Spark Plug Replacement, Install New Spark Plugs: step 5, image 2 of 2

    • Ensure spark plug gap is within specification (0.044mm) on replacement plugs. Use spark plug gauge to verify. Caution: do not contact iridium tips with gauges or plyers, may cause damage.

    • Thread each new spark plug clockwise into the cylinder head by hand to avoid cross-threading.

    • Torque to specification: Between 12 to 14 lb-ft

    Edit
    Ask FixBot
Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

with 1 other contributor

Neven Pavlovic

Member since: 12/22/25

121 Reputation

1 Guide authored

Badges: 1

0 Guide Comments

Add Comment

View Statistics:

Past 24 Hours: 3

Past 7 Days: 22

Past 30 Days: 111

All Time: 622