How Often Should the Spark Plugs on a Geely Emgrand GL Be Replaced?
2 Answers
Geely Emgrand GL spark plugs should be replaced every 40,000 kilometers. Methods to determine if a spark plug is damaged: Remove the spark plug and observe its appearance to assess its condition. A normal spark plug will have a skirt and electrodes that appear gray-white, gray-yellow, or light brown. A properly functioning spark plug will have a skirt that is reddish-brown, with an electrode gap between 0.8-0.9mm and no signs of electrode burn. If the spark plug is covered in oil or deposits but is not damaged, it can continue to be used after cleaning off the oil and deposits. If the spark plug is severely damaged, showing signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plug with a new one. Additionally, if the spark plug appears black as if smoked, it indicates that the wrong heat range was selected or that the air-fuel mixture is too rich, with oil creeping up.
I've been driving the Emgrand GL for several years. Generally, it's recommended to replace the spark plugs every 40,000 kilometers or so, as suggested by Geely's manual. However, actual driving habits are crucial. For example, frequent city traffic jams and aggressive acceleration can wear out spark plugs faster, possibly requiring replacement as early as 30,000 kilometers. Personally, I regularly check during maintenance at the 4S shop, where the mechanics measure the gap size with tools—if it's too large, it's time for a replacement. Modern cars use iridium spark plugs that last longer, but the Emgrand's original ones are copper. Don't opt for cheap, substandard replacements to save money, as this can lead to starting difficulties, increased fuel consumption, and long-term engine damage. I recommend following the user manual's guidelines and not waiting until severe shaking occurs before taking action.
