Are more expensive spark plugs better? What are the criteria for choosing spark plugs? The choice of spark plugs should be based on the needs of the car and the usage scenario, not just the price.
1. The material of the spark plug is very important.
Ordinary nickel alloy spark plugs are cheap and can be used for 20,000 to 30,000 kilometers without any problems; platinum is slightly more expensive and has a longer lifespan; and iridium spark plugs have the best performance and the longest lifespan, but are naturally more expensive. Therefore, if you have an ordinary family car, it is enough to choose a cost-effective nickel alloy or platinum spark plug. Iridium spark plugs are more suitable for some high-performance cars.
2. The second is the heat value.
This mainly affects the heat dissipation capacity of the spark plug. Before buying, you must refer to the vehicle manual and choose according to the heat value recommended by the manufacturer. Otherwise, either the temperature is not enough and the ignition is weak, or the temperature is too high and problems may occur.
3. Then there is the electrode gap.
The size of the electrode gap directly determines the ignition performance. Generally, the manufacturer will adjust it, but it is best to check it before installation to see if it meets the requirements of your car.
Conclusion
Don’t think that buying a good spark plug is a one-time solution. Regular inspection, cleaning and even replacement are necessary. No matter how good the spark plug is, if it is not replaced after its lifespan has exceeded, it will have a great impact on the engine.
Therefore, when buying spark plugs, you don’t need to blindly pursue expensive ones, but you need to see whether your car needs high-standard ones. Choosing the right one is truly cost-effective.
