When Should Spark Plugs Be Replaced in a Car?
2 Answers
When to replace spark plugs in a car: 1. The lifespan of resistor spark plugs is 20,000 kilometers; 2. The lifespan of platinum spark plugs is 40,000 kilometers; 3. The lifespan of iridium spark plugs can reach 60,000 to 80,000 kilometers. Spark plugs are a crucial component of the ignition system in gasoline engines. They introduce high voltage into the combustion chamber and create a spark by jumping the electrode gap, thereby igniting the combustible air-fuel mixture in the cylinder. A spark plug consists of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell. They are categorized into: standard spark plugs, projected insulator spark plugs, electrode-type spark plugs, seat-type spark plugs, pole-type spark plugs, surface-gap spark plugs, and standard and projected-type spark plugs.
Spark plug replacement timing is something I think about every time I drive, since spark plugs directly affect engine ignition efficiency. Based on my experience, most vehicle models recommend replacement every 30,000 to 60,000 kilometers - check your manual and actual vehicle condition. When my car was brand new, I experienced starting difficulties at just 40,000 km, with the engine shaking noticeably like it was dancing. A check revealed worn-out spark plugs. Don't delay replacement - doing it early saves fuel and prevents stalling on highways, which is extremely dangerous. During routine maintenance, I always ask the mechanic to check the spark plug color - if it's gray-black or has carbon buildup, it's nearing the end. Replacement is simple; I've tried DIY before, but it's better to visit a professional shop and use high-quality iridium or platinum spark plugs for longer durability. In short, replace them promptly based on mileage and symptoms, and your car will run much smoother.
