How to Determine if the Spark Plugs in an Automatic Transmission Car Need Replacement?
1 Answers
If the car lacks power and fuel consumption increases, it may be time to replace the spark plugs. Effects of faulty spark plugs: Damaged spark plugs can directly cause issues such as leakage in the vehicle's ignition system, increased fuel consumption, and reduced power. The most significant problem is difficulty in ignition, affecting the normal operation of the vehicle. Severe erosion of the spark plug, such as scarring at the top, damage, or melted electrodes, indicates that the spark plug is damaged and should be replaced. How to determine if a spark plug is damaged: Remove the spark plug and observe its appearance to assess its condition. A normal spark plug's insulator skirt and electrodes should appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a reddish-brown insulator skirt, an electrode gap between 0.8-0.9mm, and no signs of electrode burn. If the spark plug has oil stains or deposits but is not damaged, it can continue to be used after cleaning. If the spark plug is severely damaged, showing signs like scarring, black streaks, cracks, or melted electrodes, the cause of the damage should be identified, the issue resolved, and the spark plug replaced. Additionally, if the spark plug appears black as if smoked, it indicates the wrong heat range was selected or the mixture is too rich, with oil contamination.
