Can a Car Be Driven with Faulty Spark Plugs?
1 Answers
When spark plugs malfunction, the vehicle can still be driven for short distances, but it is recommended to replace them promptly to avoid potential damage to the vehicle. Methods to determine if spark plugs are damaged: Remove the spark plugs and observe their condition based on the following appearance colors. A normal spark plug's insulator skirt and electrodes should appear gray-white, gray-yellow, or light brown. A properly functioning spark plug will have a reddish-brown insulator skirt, with an electrode gap between 0.8-0.9mm and no signs of electrode burning. 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, with signs such as blistering at the tip, 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, or there is oil leakage.