What are the precautions for spark plug installation?

[Leonard]

Precautions for replacing spark plugs include: 1. It is best to replace them when the engine is cold; 2. When removing, pull from the base of the high-voltage line, not directly from the wire, to avoid breaking the inner core. Also, mark the position of each cylinder's high-voltage line before removal to avoid confusion; 3. Before installing the spark plug, ensure that the new spark plug matches the engine of the vehicle being serviced. The material of the spark plug has a decisive impact on its replacement cycle. The mainstream spark plugs on the market include copper core, nickel alloy core, platinum core, and iridium core. Copper core spark plugs are recommended to be replaced every 20,000-30,000 kilometers, nickel alloy core spark plugs have a slightly longer cycle and can be replaced every 40,000-60,000 kilometers, while iridium and platinum core spark plugs have more stable metal properties and better oxidation resistance, resulting in a much longer service life. Platinum core spark plugs are recommended to be replaced every 80,000 kilometers, and iridium core spark plugs every 100,000 kilometers.