How often should the Leiling spark plugs be replaced?

[SanBrianna]

Leiling spark plugs should be replaced every 40,000 kilometers. Methods to determine if spark plugs are damaged: Remove the spark plugs and observe them. Assess their condition based on the following appearance colors. Normal spark plugs have a skirt insulator and electrodes that appear grayish-white, grayish-yellow, or light brown. A properly functioning spark plug has a skirt insulator that is reddish-brown, with an electrode gap between 0.8-0.9mm and no signs of electrode burn. If the spark plugs are covered in oil or deposits but are not damaged, they can continue to be used after cleaning off the oil and deposits. If the spark plugs are severely damaged, showing signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plugs with new ones. Additionally, if the spark plugs appear black as if smoked, it indicates that the wrong heat range was selected or the mixture is too rich, with oil creeping up.

[LaHarmony]

Having driven the Leiling for many years, I frequently deal with such maintenance topics. The replacement interval for spark plugs depends on the specific model and driving habits. Generally, Toyota Leiling's factory recommendation is to inspect them every 40,000 to 60,000 kilometers. If ordinary copper-core spark plugs are used, they should be replaced, while newer models with platinum or iridium plugs can last up to around 80,000 kilometers. From my experience, if you notice difficulties starting the car, rough idling, or a sudden increase in fuel consumption, it's time to check the spark plugs. Delaying replacement can potentially harm the engine. It's best to follow the owner's manual—the Leiling manual provides clear guidance, such as extending the interval for mostly highway driving or replacing them more frequently for city stop-and-go traffic. Remember, always opt for genuine OEM spark plugs to avoid affecting the warranty.

[MacTimothy]

As an average car owner, I've found that replacing the spark plugs in my Levin every 50,000 kilometers is the safest approach. Previously, I delayed it until 70,000 kilometers, which resulted in severe engine shaking and costly repairs. Now I've learned my lesson - during regular maintenance, I ask the technician to check the electrode gap with a diagnostic tool, as too small a gap can easily cause problems. If not replaced, it not only affects fuel consumption but may also lead to exhaust system blockages. Additionally, the type of spark plug is crucial - platinum ones are more durable, while iridium ones are better suited for long-term use. If replacing them yourself, be careful not to damage the ignition coils with tools. In short, don't skimp on this small expense - prevention is better than cure.

[LeAnastasia]

Over the years of car enthusiasm, spark plugs have been the heart of the engine. The standard replacement interval for the Levin is around 60,000 kilometers. I prefer upgrading to high-performance spark plugs, such as double iridium ones, which can make acceleration smoother and even save fuel. For older Levin models with copper-core plugs, replace them more frequently—within 50,000 kilometers. The newer turbocharged versions can last up to 80,000 kilometers. Don’t just rely on mileage; checking the spark plug’s color is crucial—if it’s black or has carbon buildup, act immediately. Occasionally browsing forum posts where fellow car enthusiasts share their experiences helps—some track-focused drivers replace them even sooner. With proper maintenance, your beloved car will have a longer lifespan.