How often will the spark plug be replaced?

　　The function of the sparkplug is to discharge the high voltage pulse generated by the ignition coil through the gap between the electrodes on the side of the center electrode to generate sparks, which are used to ignite the mixed gas in the cylinder of the automobile engine. ! If it is the heart of the engine car, then the spark plug of the car is the heart of the engine. The more stable the spark plug, the easier it is to ignite the mixture.

　　How to intuitively judge whether the spark plug needs to be replaced?

　　One point: when you are idling, you don’t refuel, a normal perfect engine should be very, very smooth, but if there is a problem with a spark plug, it will have an intermittent or continuous jitter problem. Just the sudden sound, not very good.

　　Two points: When you remove the spark plug, it has a discharge electrode. Looking at the picture, the electrode has a normal consumption. If the gap is extremely wide, it will cause a normal discharge process. In this case Will cause your engine to become weak.

　　Three points: The spark plug head is normally brown. If it is black and oily, the engine in this case is definitely in an abnormal process, which is likely to cause carbon deposits and oil burning problems.

　　Type and life of spark plug

　　There are many types of spark plugs, with different structural designs, but their service life has a lot to do with the material, so we classify them according to the material.

　　For a long time, the center electrode of automobile spark plugs has used nickel alloy （as shown above）。 This metal is widely used in low-end spark plugs due to its low price. The design life of this dfsk spark plug is 20,000 kilometers.

　　In order to prevent the rapid change of the spark plug gap in automobiles, the center electrode and side electrode of the spark plugs of mid-to-high-end automobiles are made of very hard platinum or iridium, so that the service life of the spark plugs will be extended to 60,000-100,000 kilometers.

　　If the center electrode of your car spark plug is nickel alloy, it is recommended to replace it every 20,000 kilometers. If the center electrode and side electrode of your car spark plug are platinum or iridium, it is recommended to replace it once every 100,000 kilometers. If your car spark plug only has the center electrode For ultra-platinum or iridium, it is recommended to replace it with 40,000-60,000, so you understand!

　　How to distinguish between nickel alloy spark plugs and iridium platinum spark plugs with the naked eye, so as to avoid being deceived when replacing them?

　　The diameter of the center electrode of platinum or iridium spark plugs is generally 0.4 mm-0.6 mm, which is the thickness of the needle hole; nickel alloy spark plugs are relatively thick, and the diameter is the same as the width of the side electrode belt. In addition, there is a round or elliptical protrusion on the side electrode of the platinum spark plug that faces the center electrode. When replacing the spark plug of a car, you must check whether there is this point on the side electrode.

　　There are also ruthenium spark plugs, which claim that the electrode loss is iridium spark plugs, which means that the service life can be up to 4 times that of iridium platinum spark plugs, but the actual service life needs to be considered.