How Often Should the Spark Plugs Be Replaced on a Sylphy?
3 Answers
Sylphy's spark plugs should be replaced every 40,000 kilometers. As part of the ignition system, their primary function is to introduce the high-voltage electricity generated by the ignition coil into the engine cylinder under the control of the engine computer, creating a spark between the spark plug electrode gaps to ignite the air-fuel mixture, thereby ensuring the engine operates normally. Key considerations for replacing spark plugs include: 1. After removing the spark plugs, cover the spark plug installation holes with adhesive tape; 2. When installing spark plugs, use a torque wrench to tighten them to the specified torque; 3. Choose the appropriate spark plug model suitable for your car's engine when replacing them.
As a seasoned driver with over a decade of experience, I believe spark plugs should be replaced regularly to maintain smooth vehicle operation. For the Nissan Sylphy, it's generally recommended to inspect the spark plugs around 30,000 kilometers. My own car is a Nissan Sylphy, and the manual suggests replacing them every 30,000 to 50,000 kilometers, depending on driving habits. If you frequently encounter traffic jams in the city or take many short trips, the spark plugs may wear out faster, potentially causing issues as early as 25,000 kilometers, such as engine shaking, sluggish acceleration, or increased fuel consumption. I always ask the technician to check the spark plugs during every maintenance service. If they're in good condition, I might delay replacement, but I never exceed 50,000 kilometers. If they fail, it could damage other components. Once, I delayed replacement too long, and my car broke down on the road. The combined cost of towing and repairs far exceeded the price of replacing the spark plugs—definitely not worth it.
Safety is a top priority. If spark plugs are not replaced regularly and fail to ignite, the engine may misfire, which is extremely dangerous, especially on highways. For the Nissan Sylphy, it's generally safe to replace spark plugs every 30,000 to 40,000 kilometers, as recommended by the manual and the manufacturer. I've seen a friend's car break down due to spark plug issues, making it hard to control even with emergency braking. Factors like poor fuel quality or frequent short-distance driving can accelerate wear. Iridium spark plugs last longer, but don't rely on them too much. Symptoms like difficulty starting or weak acceleration mean it's time for immediate repair. Always check during regular maintenance—don't skimp on this small expense. A well-maintained car ensures a safer drive.
