Is it necessary to go to a 4S shop to replace spark plugs?

[FrankLee]

Replacing spark plugs does not necessarily require going to a 4S shop. If you have some hands-on skills, you can completely replace them yourself. There is no need to visit a 4S shop for such small components, and you can also save on labor costs. To replace spark plugs, you need to prepare the necessary tools, including 10mm, 14mm, and 16mm sockets, a long extension bar, a ratchet wrench, a magnetic rod, a towel, etc. Steps to replace spark plugs: 1. After the engine has completely cooled down, unplug the high-voltage coil connector, then use a 10mm socket to remove the fixing bolts. After removing the high-voltage coil, you can see the spark plug in the cylinder; 2. Depending on the size of the spark plug nut, use a 14mm or 16mm socket with a long extension bar to turn counterclockwise to loosen it. After loosening, use a magnetic rod to pull out the spark plug; 3. Use the magnetic rod to hold the new spark plug and insert it into the hole, then tighten it.