How often should Accord spark plugs be replaced?
3 Answers
The spark plugs of an Accord usually need to be replaced every 30,000 kilometers. Under normal maintenance conditions, car spark plugs should be replaced after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine, so it is recommended to follow the user manual. The following standards can be referenced for maintenance and replacement: platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps to replace spark plugs: Open the hood, lift the plastic cover of the engine, and remove the high-voltage ignition wires. Mark the position of each cylinder to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. When removing them, check for external debris like leaves or dust and ensure they are cleaned thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the removed high-voltage ignition wires according to the firing order, and then snap the cover back into place.
I've been driving my Accord for almost ten years, and the spark plug issue really depends on the specific situation. The factory manual recommends replacing nickel alloy spark plugs at 40,000 kilometers, but based on my experience, most cars can still run smoothly at 60,000 kilometers. Last week during maintenance, the mechanic took them out for inspection and found the electrode gap had widened to over 1 mm. After switching to iridium spark plugs, cold starts became noticeably smoother. Driving habits make a big difference – frequent short trips or aggressive acceleration can shorten their lifespan. My suggestion is to check electrode erosion during every maintenance after 50,000 kilometers. Newer models now use iridium-platinum spark plugs with a 100,000-kilometer lifespan, but for older cars, it's better not to exceed 80,000 kilometers. After all, replacing four only costs about 300 yuan, which is much cheaper than an engine overhaul.
I've seen too many Accords with spark plug issues at the repair shop. The factory spark plugs are usually made of nickel alloy and should be replaced every 40,000 to 60,000 kilometers. One customer came in at 70,000 kilometers, and the engine shook violently during sudden acceleration. Inspection revealed that the electrode had melted and fallen into the cylinder, costing over 5,000 yuan in repairs. Newer models now use double iridium spark plugs, extending the lifespan to 80,000-100,000 kilometers, but turbocharged models should be checked at 50,000 kilometers. When replacing spark plugs, we also test the ignition coils and cylinder pressure because leaking ignition coils can accelerate spark plug wear. If you notice abnormal fuel consumption, get it checked immediately—don't wait for the warning light to come on.
