How often should the spark plugs be replaced on a BMW 5 Series?

1 Answers
VonHarmony
07/30/25 5:09am
BMW 5 Series spark plugs should be replaced every 20,000 km. Their function is to discharge the high-voltage pulse generated by the high-voltage wire, breaking down the air between the two electrodes of the spark plug to ignite the gas in the cylinder. Maintenance methods for BMW 5 Series spark plugs: 1. Clean the dust and impurities around the spark plugs using compressed air or a soft tube to blow them away; 2. When removing the spark plugs, ensure the engine is in a cold state; 3. Do not install or remove spark plugs while the car engine is running; 4. After removing the spark plugs, protect the spark plug installation hole to prevent debris or dust from entering the cylinder; 5. Use the correct tools when removing the spark plugs, ensuring the wrench fits properly and is operated straight and true to avoid damaging the insulating ceramic body.
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