How to Replace Spark Plugs in the New Cruze?

[StLeonardo]

Determine whether to replace the spark plugs ahead of schedule or shorten the manual standards based on the symptoms of spark plug failure. The spark plug is a crucial component of the gasoline engine's ignition system. It introduces high voltage into the combustion chamber and causes it to jump across the electrode gap to generate a spark, thereby igniting the combustible mixture in the cylinder. Under the effect of high voltage, the air between the spark plug's center electrode and the side electrode rapidly ionizes, forming positively charged ions and negatively charged free electrons. When the voltage between the electrodes reaches a certain level, the number of ions and electrons in the gas increases like an avalanche, causing the air to lose its insulating properties. A discharge channel forms in the gap, leading to a "breakdown" phenomenon. At this point, the gas becomes a luminous body, known as a "spark." Along with thermal expansion, a "crackling" sound is also produced. The temperature of this electric spark can reach as high as 2000-3000°C, sufficient to ignite the mixture in the cylinder's combustion chamber.