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The oil stains on the plug are caused by lubricating oil, and the breakage on the top of the insulator may be caused by low gasoline grade. When maintaining a Petrol Car, pay more attention to the condition of the spark plugs. Spark plugs with excellent performance can improve the vehicle's power performance. The service life of spark plugs is generally 15,000 kilometers, and the service life of long-term spark plugs does not exceed 30,000 kilometers. However, many car owners often have some problems with their spark plugs and cannot reach their normal service life.
In fact, spark plugs operate at quite high temperatures. When a Petrol Car engine is running normally, the temperature of the spark plug insulator skirt is generally maintained between 500-600 degrees Celsius. Temperatures that are too high or too low will have adverse effects on the spark plug. When the temperature of the spark plug is too low, the insulator on the spark plug is prone to carbon deposits, which will eventually cause leakage and fire. If the spark plug operating temperature is too high, it can easily cause pre-ignition and knocking of the gasoline engine. At the Roewe Car training camp, the staff of the specialty store classified the common faults of spark plugs into two types. One is that the spark plug is severely ablated, and the other is that there are deposits on the spark plug.
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