How many kilometers should the Malibu XL spark plugs be replaced?
2 Answers
The spark plugs of the Malibu XL should be replaced every 60,000 kilometers. Methods to determine if the spark plugs are damaged: Remove the spark plugs and observe them. The condition of the spark plugs can be judged based on their appearance and color. Normal spark plugs have a skirt and electrodes that appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a skirt that is reddish-brown, with an electrode gap between 0.8-0.9mm, and no signs of electrode burn. If the spark plugs are covered with oil or deposits but are not damaged, they can continue to be used after cleaning off the oil and deposits. If the spark plugs are 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 plugs with new ones. Additionally, if the spark plugs appear black as if smoked, it indicates that the wrong cold/hot type was selected or that the mixture is too rich, with oil seeping up.
When it comes to replacing the spark plugs for the Malibu XL, I've been driving this car for several years. According to the official manual recommendation, they generally need to be replaced around 60,000 kilometers. However, it depends on the specific model year and the type of spark plugs. For example, if the original ones are iridium, they can last over 80,000 kilometers. After I replaced mine at 70,000 kilometers, the car immediately felt much smoother, acceleration was no longer sluggish, and fuel consumption even dropped a bit. Don’t overlook this—worn-out spark plugs can cause difficulty starting or stalling, especially during cold starts in winter. If you frequently drive short distances or on dusty roads, spark plugs can accumulate carbon deposits faster, so it’s advisable to check them earlier. When replacing, it’s best to choose OEM or branded parts. Doing it yourself isn’t difficult and the cost is low—I usually finish in half an hour, saving on labor costs at the repair shop. Remember to have the technician check them during regular maintenance to ensure driving safety.
