How Many Kilometers Should a Car Run Before Replacing Spark Plugs?
1 Answers
Under normal maintenance conditions, spark plugs should be replaced after 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is recommended to follow the vehicle's manual. Refer to the following maintenance standards for replacement: platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. If spark plugs are damaged, they can directly cause issues such as leakage in the ignition system, increased fuel consumption, reduced power, and most notably, difficulty in starting the vehicle, affecting its normal operation. Severe spark plug erosion—indicated by pitting, damage, or melted electrodes—means the spark plug is damaged and should be replaced. Steps to replace spark plugs: Open the hood, remove the engine's plastic cover, and detach the high-voltage wires. Mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. Check for external debris like leaves or dust and ensure they are cleaned thoroughly. Insert the new spark plug into the hole, hand-tighten it a few turns, and then use the socket to secure it. Reattach the high-voltage wires in the correct firing order and replace the cover.
