Should BMW Spark Plugs Be Replaced During Maintenance?
2 Answers
Spark plugs are replaced based on mileage, not during every maintenance service. Function of Spark Plugs: Spark plugs are crucial components in gasoline engine ignition. They introduce high-voltage electricity into the combustion chamber and generate sparks by jumping the spark gap. The main parts of a spark plug include the insulator, electrodes, shell, and terminal stud. The insulator must possess excellent insulation and thermal conductivity, high mechanical strength, and the ability to withstand high-temperature thermal shocks and chemical corrosion. It is typically made of 95% alumina ceramic, while the shell is constructed from steel. Methods to Determine Whether Spark Plugs Need Replacement: This can be assessed based on the classification of the spark plugs. In real-world conditions, standard resistor spark plugs have a lifespan of 20,000 kilometers, while higher-quality platinum spark plugs last 40,000-50,000 kilometers, and iridium spark plugs can endure 70,000-80,000 kilometers. To test spark plugs, short-circuit them with a screwdriver while the engine is idling, and carefully observe changes in engine speed and sound. If there is little to no difference compared to before, the spark plugs are functioning normally and do not require replacement.
I've been driving a BMW for years and know all about spark plug maintenance. Spark plugs are crucial components for engine ignition. Over time, their electrodes wear out and carbon deposits accumulate, leading to misfires. BMW models often use premium spark plugs like iridium ones, which have a longer lifespan. The manual recommends replacement approximately every 30,000 kilometers. Last time I delayed replacing them, I experienced unstable idling, skyrocketing fuel consumption, and sluggish acceleration. Timely replacement ensures efficient engine operation and prevents minor issues from turning into major faults. You can get it done at a 4S shop or professional repair center at a reasonable cost. Remember, don't overlook this small part—it affects vehicle safety and daily driving experience, especially giving peace of mind during long trips.
