How often should the spark plugs of the X-Trail be replaced?

[AngelaAnn]

The spark plugs of the X-Trail should be replaced every 40,000 kilometers. Spark plugs, commonly known as ignition plugs, are crucial components of the gasoline engine's ignition system. They introduce high-voltage electricity into the combustion chamber, causing it to jump across the electrode gap, ionizing the air between the two electrodes to produce a spark, thereby igniting the combustible mixture in the cylinder. Methods to determine if the X-Trail's spark plugs need replacement: 1. During idle, use a screwdriver to perform a short-circuit test on the spark plugs. Carefully listen for changes in the engine's speed and sound. If there is little to no change compared to before, it indicates the spark plugs are functioning normally and do not need replacement. 2. Observe the color of the spark plugs. If they are reddish-brown or rust-colored, it also indicates normal functioning. If there is oil residue, it suggests the spark plug gap is misaligned or short-circuited, and replacement is necessary. The 2014 X-Trail measures 4643mm in length, 1820mm in width, and 1725mm in height, with a wheelbase of 2706mm. It features a 5-door, 5-seat SUV body structure, a 6-speed manual transmission, and a naturally aspirated intake form.