How many kilometers should the spark plugs be replaced for the ninth-generation Accord?
3 Answers
The spark plugs of the ninth-generation Accord should be replaced every 40,000 kilometers. Methods to determine if the spark plugs are damaged: Remove the spark plugs and observe them. Judge the condition of the spark plugs 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 burning. If the spark plugs are oily or have 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, with 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 heat range was selected or that the air-fuel mixture is too rich, or that engine oil is leaking into the combustion chamber.
I've been driving a ninth-generation Accord, and the spark plugs are recommended to be replaced at around 120,000 kilometers. When my car reached over 100,000 kilometers, I noticed a slight increase in fuel consumption. After checking the manual, I found that the spark plugs were worn out. This model uses iridium material, which has a long lifespan, but regular replacement can prevent engine shaking or difficulty starting. I usually pay attention to how driving habits affect it—for example, frequent highway driving or city traffic congestion can cause faster spark plug wear, so it's necessary to inspect them earlier. Actually, you can easily check it yourself: if you notice sluggish acceleration or the engine light comes on, it's time to inspect them. After replacement, fuel consumption noticeably decreases, acceleration becomes smoother, and it extends the engine's lifespan. To save money, go to an authorized shop for genuine parts—don't cheap out and buy inferior products, as safety comes first. I always stick to replacing them at this mileage, and it gives me peace of mind while driving.
My car is a ninth-generation Accord, and the spark plugs can be replaced at 120,000 kilometers, as stated in the manual. As someone who drives frequently, I once tried extending it to 130,000 kilometers, but the fuel consumption skyrocketed, and the ride became rough. I recommend checking them during regular maintenance—if there's heavy carbon buildup on the spark plugs or severe electrode wear, they should be replaced early. Different driving conditions have a big impact; for example, frequent city traffic with heavy dust makes issues more likely. After replacement, engine efficiency improves, combustion becomes more complete, and tailpipe emissions are reduced. It’s generally easy to do it yourself, but be careful not to damage the wiring. The cost isn’t high, and the fuel savings alone make it worthwhile. Remember, stick to OEM specifications to avoid damaging the computer system and ensure reliable, safe driving.
