How often should the spark plugs of BMW B-series engines be replaced?
2 Answers
BMW B-series engine spark plugs should be replaced every 30,000 kilometers. If the spark plugs are not replaced for a long time, it can cause various issues such as leakage in the vehicle's ignition system, increased fuel consumption, reduced power, and most importantly, difficulty in ignition, affecting the normal use of the vehicle. Spark plug replacement interval: Under normal maintenance conditions, they should be replaced after driving 40,000 to 60,000 kilometers, but this may vary depending on the brand and engine. It is recommended to follow the user manual. You can refer to the following standards for maintenance and replacement: platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the hood, lift the engine's plastic cover, remove the high-voltage wires, and mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. When removing them, check for external debris like leaves or dust and ensure they are cleaned thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the removed high-voltage wires according to the ignition sequence and secure the cover.
I've been driving my BMW B-series for several years. The spark plug replacement interval is usually checked every 60,000 kilometers or around 5 years, depending on your driving habits. If you frequently encounter city traffic jams, consider replacing them earlier. I usually pay attention to whether the engine idles smoothly. If there's shaking or sluggish acceleration, it might indicate aging spark plugs. Don't underestimate this small component—faulty spark plugs can increase fuel consumption and even cause engine starting difficulties. BMW's official maintenance manual recommends this interval, and sticking to regular replacements keeps the car running smoothly. I also recommend using high-quality spark plugs and learning some simple DIY skills. Buying a wrench can save you a chunk of repair costs. In short, proper maintenance extends engine life and gives you peace of mind while driving.
