Gather your tools and materials. You will need:
- New spark plugs
- Spark plug wrench
- Socket wrench
- Extension
- Gapping tool (optional)
- Dielectric grease (optional)
1. Prepare the vehicle.
- Turn off the engine and allow it to cool down.
- Open the hood and disconnect the negative battery cable.
2. Locate the spark plugs.
- The spark plugs are located in the cylinder head, on top of the engine. They are covered by black plastic covers.
3. Remove the spark plug covers.
- Use a socket wrench to loosen the bolts that hold the spark plug covers in place.
- Remove the covers and set them aside.
4. Check the spark plugs.
- Inspect the spark plugs for wear or damage.
- Look for signs of carbon deposits, erosion, or pitting.
- If the spark plugs are worn or damaged, they will need to be replaced.
5. Remove the spark plugs.
- Use a spark plug wrench to loosen the spark plugs.
- Be careful not to drop the spark plugs into the engine.
6. Gap the new spark plugs (optional).
- Use a gapping tool to set the gap between the center electrode and the side electrode of the spark plugs.
- The gap should be set to the specifications listed in your owner's manual.
7. Apply dielectric grease (optional).
- Apply a small amount of dielectric grease to the threads of the new spark plugs.
- This will help prevent the plugs from seizing in the engine.
8. Install the new spark plugs.
- Hand-tighten the spark plugs into the cylinder head.
- Use a spark plug wrench to tighten the spark plugs until they are snug.
- Do not over-tighten the spark plugs.
9. Replace the spark plug covers.
- Reinstall the spark plug covers and tighten the bolts to secure them in place.
10. Reconnect the battery.
- Reconnect the negative battery cable to the battery terminal.
11. Start the engine.
- Start the engine and let it run for a few minutes.
- Check for any leaks or unusual noises.
That's it! You have now successfully changed the spark plugs in your 2007 Honda CR-V.
