How often should the Nissan Qashqai spark plugs be replaced?
2 Answers
Nissan Qashqai spark plugs should be replaced every 40,000 kilometers. The spark plug is a crucial component of the gasoline engine's ignition system. It introduces high-voltage electricity into the combustion chamber, causing it to jump across the electrode gap to generate a spark, thereby igniting the combustible mixture in the cylinder. If the spark plug is damaged, it can directly lead to various issues such as ignition system leakage, increased fuel consumption, and reduced power. The most significant problem is difficulty in ignition, which affects the vehicle's normal operation. Severe spark plug erosion, including scarring at the top, damage, or melted and eroded electrodes, indicates that the spark plug is damaged and should be replaced. Steps for replacing spark plugs: Open the engine hood, lift the plastic cover of the engine, and remove the high-voltage 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 external debris like leaves or dust and ensure everything is 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 wires in the order of the ignition sequence and secure the cover.
When I first bought my Qashqai, I also pondered about spark plug replacement. As a family car owner, spark plugs generally need to be changed every 50,000-70,000 kilometers or every 4-6 years, depending on whether you have the 1.6L or 2.0L engine version. The maintenance manual clearly states this, and I follow it accordingly. If not replaced on time, I noticed the car starts slower, fuel consumption gradually increases, and the engine occasionally shakes. Once in winter, it was particularly hard to start, and a later inspection at the 4S shop revealed severe carbon buildup on the spark plugs. After replacing them, it ran smoothly again. I recommend asking the technician to check the spark plug gap with tools during each routine maintenance. If driving conditions are harsh, like frequent traffic jams or uphill roads, the replacement cycle can be shortened. The spark plug location in the Qashqai isn’t too tricky, so DIY replacement is possible, but remember to use genuine parts for proper compatibility. Don’t delay too long to avoid roadside troubles.
