Compared with changing oil, replacing spark plugs is much simpler. Most brothers and sisters who are willing to maintain their cars themselves will definitely replace the spark plugs themselves.
As for the replacement method, there are a large number of official and self-media videos online, which are very easy to operate and the tools are very simple
Of course, some engines are very troublesome to replace due to problems with cabin layout and cylinder block structure, and many parts need to be removed, such as horizontally opposed engines.

Most German engines require replacement of spark plugs at 20,000 kilometers, but some brands of platinum spark plugs can be replaced in a longer cycle.
Speaking of this, it reminds me of the fact that Honda Fit’s antifreeze took 120 months to replace. You can go and search for the replacement cycle in Fit’s spark plug maintenance manual, which will definitely surprise you!
The brand of Volkswagen TSI engine replacement spark plugs I chose was ordinary platinum spark plugs, which are also used in official 4S stores. They are cheap and easy to use.

A few suggestions,
1. When purchasing spark plug wrenches, you must choose high-quality ones, otherwise you won’t be able to use them hard. Nowadays, there are magnetic sleeves that can attract the spark plug, which is much easier to use than clamping with rubber rings.
2. You can buy a mid-flying torque wrench, which will be used frequently in the future when you demolish the car yourself, or simply use the swing 90 method to tighten it. You can search for “spark plug installation swing”
3. While replacing the spark plug, you can use an endoscope to check the combustion situation in the cylinder. If there is too much carbon deposit, it is no harm to buy a bottle of cleaning agent in the cylinder and spray it with it.

** About me **
Love life, cars and travel, and love old boys who mess around
Models considered for the future: Urban Ferry (Audi A3 hatchback) Wanli Crossing (Haval H9) Immigrant Life (RV)
Favorite models: Audi A6 Travel, Audi Old Q5, Touareg II, Matway, Subaru Outback
Regarding car use experience and maintenance experience, everyone is welcome to communicate with each other, play with cars, shoot cars, coordinate Nanjing