What is the torque specification for the Mazda3 spark plugs?

[DeGenevieve]

The installation torque for Mazda3 spark plugs is between 15-20 Newton meters. Main types of spark plugs include: standard spark plugs, extended insulator spark plugs, electrode-type spark plugs, seat-type spark plugs, pole-type spark plugs, and surface-gap spark plugs. Spark plug replacement intervals: Under normal maintenance conditions, replacement is recommended at 40,000-60,000 kilometers, but this may vary depending on brand and engine type. Always refer to the owner's manual for specific recommendations. Maintenance replacement reference standards: platinum spark plugs at 40,000 km, standard nickel alloy spark plugs at 20,000 km, and iridium spark plugs at 60,000-80,000 km. How spark plugs work: Under high voltage, the air between the center electrode and side electrode rapidly ionizes, forming positively charged ions and negatively charged free electrons. When voltage reaches a certain threshold, the number of ions and electrons increases exponentially (like an avalanche), causing the air to lose its insulating properties and creating a discharge channel - this is called "breakdown." At this moment, the gas becomes luminous (the "spark") while expanding with heat and producing a "snapping" sound. These electrical sparks can reach temperatures of 2000-3000°C, sufficient to ignite the air-fuel mixture in the combustion chamber.