Most spark plugs need replacing after about 30,000 miles, but check your owner’s manual to see if your vehicle is any different. While changing spark plugs might sound like intense work, it’s a pretty simple process. You just need to set aside some time and exercise patience. Don’t rush, because you need to install the replacements in a specific order.
Repeat these steps for each spark plug, one at a time. If you buy the right plugs, you won’t have to worry about “gapping” the plugs, because they’ll come pre-gapped.