How often should the spark plugs of the Qashqai be replaced?
3 Answers
The spark plugs of the Qashqai are recommended to be replaced after exceeding 40,000 kilometers of driving. Under normal maintenance conditions, car spark plugs should be replaced after 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is advisable 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 for replacing spark plugs: Open the hood, lift the engine's plastic cover, remove the high-voltage ignition wires, and 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 thoroughly cleaned. 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 high-voltage ignition wires in the firing order and secure the cover.
As a veteran Qashqai driver with over a decade of experience, I genuinely believe spark plugs don't need frequent replacement. Factory-installed iridium or platinum spark plugs can easily last 100,000 km. But actual wear depends on driving habits - my frequent urban stop-and-go commuting with traffic jams causes more engine carbon buildup, accelerating spark plug degradation. At 80,000 km, I noticed sluggish starts and weak throttle response, and inspection revealed electrode erosion. I promptly replaced them with NGK iridium spark plugs for 600 RMB, restoring crisp acceleration. Remember: don't wait until complete failure. During routine maintenance, have mechanics check electrode gap - replacement is due when exceeding 0.9mm.
This is a common question from Qashqai owners during car repairs. According to the manufacturer's manual, the spark plugs should be replaced every 100,000 km. However, in actual maintenance, many issues arise at around 70,000-80,000 km. The lifespan of spark plugs is closely related to fuel quality. The high sulfur content in domestic gasoline can easily lead to electrode carbon buildup. During inspection, focus on checking for cracks in the ceramic body and whether the electrode gap is too wide. The Qashqai 1.6T model uses spark plugs with a heat rating of 7, while the 2.0L model uses a rating of 6. Using the wrong type can affect ignition efficiency. I recommend using DENSO double iridium spark plugs—they're durable and affordable, costing around 500 RMB including labor. Always perform the replacement when the engine is cold; removing them while hot can cause thread stripping.
