Tools and materials needed:
- Spark plugs (4)
- Spark plug wrench
- Gapping tool
- Socket set
- Extension
- Flat-blade screwdriver
- Pliers
- Rags
- Compressed air
1. Prepare the vehicle:
- Turn off the engine and allow it to cool down completely.
- Disconnect the negative battery terminal to prevent any accidental electrical surges.
2. Remove the spark plug covers:
- Locate the four spark plug covers on the top of the engine. They are usually black or dark-colored plastic covers.
- Use a flat-blade screwdriver to gently pry open the covers and remove them.
3. Clean the area around the spark plugs:
- Use compressed air to blow away any dirt or debris around the spark plugs.
- Be careful not to drop anything into the spark plug wells.
4. Remove the old spark plugs:
- Use the spark plug wrench to loosen and remove the old spark plugs.
- Be careful not to drop the old spark plugs into the engine.
5. Gap the new spark plugs:
- Check the gap between the center electrode and the ground electrode of the new spark plugs. The gap should be between 0.028 and 0.032 inches.
- If necessary, use a gapping tool to adjust the gap.
6. Install the new spark plugs:
- Screw in the new spark plugs by hand until they are finger-tight.
- Use the spark plug wrench to tighten the spark plugs until they are snug.
- Do not overtighten the spark plugs, as this can damage the threads.
7. Replace the spark plug covers:
- Replace the spark plug covers and make sure they are properly seated.
8. Reconnect the battery:
- Reconnect the negative battery terminal.
9. Start the engine and test:
- Start the engine and let it run for a few minutes.
- Listen for any unusual noises or vibrations.
- If everything seems normal, the spark plug replacement is complete.
NOTE:
- Always follow the recommended spark plug specifications and torque settings provided in the vehicle's owner's manual.
- If you're not comfortable performing this task yourself, it's best to have the spark plugs replaced by a qualified mechanic.
