1
- Use a flathead screwdriver to remove the two screws holding the engine cover in place.
- Remove the engine cover.
2012-2015 Honda Civic Spark Plugs Replacement
The owner's manual recommends that your spark plugs are changed approximately every 30,000 miles.
Tools (5)
Step-by-step instructions
2
- Locate the four spark plug connectors.
- Insert a screwdriver into the space in the wire connector and lift the lid.
3
- Locate the bolt securing the ignition coil.
- Use a wrench with a 10 mm socket to remove the bolt securing the ignition coil.
- Once the bolt is removed, pull out the ignition coil.
4
- Locate the old spark plug.
- Use a wrench with a spark plug socket (with a rubber grommet) to unscrew the spark plug.
- Once the spark plug is unscrewed, pull out the wrench along with the spark plug.
5
- Ensure that the new spark plug is dry.
- Use a gap measuring tool to ensure that the spark plug gap is appropriate.
- It is optional to lightly coat the threads with anti-seize to help remove them in the future.
- Do not get anti-seize on the electrodes (the gap at the top of the threads).
6
- Attach the new spark plug to the spark plug socket, and finger tighten the new spark plug.
- Use the wrench to tighten the spark plug to 45 degrees.
- Do not overtighten the spark plug.
- Re-insert the ignition coil.
7
- Use the wrench with the 10 mm socket to tighten the bolt that fastens the ignition coil.
- Re-connect the wire connecter to the ignition coil.
Conclusion
Repeat steps for the remaining 3 spark plugs. Reattach the engine cover with the flathead screwdriver.
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