Spark plugs are very easy to change but if you have never done it you may think you can't. Yes you can! It's easy.
Why should you replace your spark plugs?
Spark plugs are one of the most essential components of your car’s engine- old spark plugs can drastically decrease your gas mileage.
Here are directions and pics of my last Spark Plug Change.
1. Make sure your engine is COLD.
2. Have all tools you will need handy.
For this job, you will need:
Hex bit set
Torx socket set or 1/4 socket will do as a last resort.
6 or 9 inch extention
5/8 spark plug socket
4 new spark plugs
spark plug gaper if plugs need gaping
Blanket to protect fender from scratches
3. Disconnect battery.
4. Put blanket over fender to protect paint job.
5. Gap your new spark plugs.
You can determine the correct spark plug gap by looking for the engine specifications sticker under your hood. Always get the right spark plugs for your car, preferably the original brand. You can also consult a parts guidebook, or ask for help at the parts store- you will be there anyway to get your plugs and plug gaping gauge.
3 or 4 pronged Spark plugs don't need gaping.
6. Use 5mm Hex bit and remove the 3 screws on the red cover over spark plugs.
7. Lift and Set cover to the side.
8. Here you see the spark plug wire harness.
9. Remove wires from the coil packs.
10. Grab orange plug cap and wiggle it as you pull it off. It may be hard to remove and then set it to the side.
11. Now remove the plug from the other side of the coil packs. I used a flat head screw drive to help pop it off.
12. Now use Torx socket or 1/4 socket and take out the 2 screws holding the coil packs in place.
13. Now use both hands and wiggle and pull on coil pack to remove it. This is a little tough.
14. Now all 4 Spark plugs can be accessed.
15. Using your rachet, extention and 5/8 spark plug socket, take out the the first plug. (I take out 1 plug and put in a new plug before moving on the the next plug. I don't like leaving the spark plug hole open where dust or dirt can fall in.) I used 2 long extentions for the pictures.
16. Remove old plugs...here are mine.
17. Put in new plugs and Hand tighten them, then snug them down with the socket wrench.
18. Follow steps in reverse to put back together. Reconnect battery.
FYI...Make sure when putting wires back on that they are in right location so the plastic wire holder fits into the brackets to hold it in place.
19. Be sure all tools are clear before closing hood.
20. Start car and