How Often Should the Spark Plugs of a Van Be Replaced?
3 Answers
Under normal maintenance conditions, the spark plugs of a van should be replaced every 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, 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, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the hood, lift the plastic cover of the engine, and remove the high-voltage distributor wires. Mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris like leaves or dust and ensure they are cleaned thoroughly. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the removed high-voltage distributor wires according to the firing order, and then secure the cover.
I usually drive a van for deliveries, covering 100-200 kilometers daily, so spark plugs are quite crucial. Last time during maintenance, the mechanic said standard nickel alloy spark plugs need replacement around 30,000 km, platinum ones can last 50,000 km, while iridium plugs are the most durable, reaching 60,000-80,000 km. But don't just focus on mileage—listen to the engine sound. If it vibrates noticeably at idle, lacks power during acceleration, and consumes more fuel, the spark plugs might be failing. I just replaced mine last month—simply unscrew the high-tension lead to pull them out, and new spark plugs cost only a few dozen yuan each. Remember not to delay too long; waiting too long can damage the ignition coils, and repairs would cost way more than this.
Having worked in repair shops for over a decade, there are several key points to consider when deciding whether to replace van spark plugs. First is the material: nickel alloy starts degrading at 30,000 km, platinum lasts about 50,000 km, and iridium can go up to 70,000 km. Second, watch for symptoms - difficulty starting or engine hesitation are warning signs, especially noticeable during cold winter starts. Third, check the gap: measure the electrode gap after removing the spark plug, replacement is mandatory if it exceeds 1.3mm. Since vans often carry heavy loads, I recommend a conservative replacement interval of 30,000-40,000 km. While you're at it, clean the ignition coil connectors thoroughly - poor contact can be misdiagnosed as spark plug issues.
