What is the lifespan of nickel alloy spark plugs?
3 Answers
Nickel alloy spark plugs have a lifespan of 2,000 to 3,000 kilometers. The functions of spark plugs are: 1. To introduce the high voltage electricity generated by the ignition coil into the engine cylinder; 2. To generate sparks between the spark plug electrodes to ignite the air-fuel mixture, ensuring the engine operates normally. The method for removing spark plugs: 1. Clean the dust and impurities around the spark plugs using compressed air or a soft tube to blow them away; 2. Ensure the engine is in a cold state before proceeding; 3. Immediately protect the spark plug installation port after removal to prevent any impurities or dust from entering the cylinder; 4. Be careful not to damage the insulating porcelain body when using a wrench; 5. Do not bend or strike the center electrode when adjusting the spark plug gap.
After using cars for so many years, nickel alloy spark plugs typically last around 20,000 to 30,000 kilometers. These plugs have nickel-based electrodes, which are harder than copper ones but still wear out quickly, especially in stop-and-go city driving or frequent high-speed acceleration, leading to carbon buildup or gap widening. My previous car started misfiring at 30,000 kilometers, with sluggish cold starts and a sharp increase in fuel consumption. Regularly checking for electrode erosion is crucial—if left unchanged, the engine will shake like it's sick, needlessly increasing repair costs. So, it's advisable to inspect them every two years or 25,000 kilometers and replace them promptly to maintain smooth power delivery and fuel efficiency, avoiding major engine issues down the line.
Having driven several economy cars, the lifespan of nickel alloy spark plugs is roughly 20,000 to 40,000 kilometers, depending on your driving habits. In my experience, they can barely last 35,000 km with mostly highway driving, but in city traffic and cold weather, they tend to wear out after just over 20,000 km, with significant electrode erosion. During inspections, don't just check the spark plugs—take a look at the ignition coils too. Preventive maintenance is simple: check the gap every 20,000 km and clean them if carbon buildup is heavy. I remember once not replacing them, and the engine misfired badly while consuming more fuel. Sticking to regular replacements is much cheaper than engine repairs—safer and more cost-effective.
