How often should car spark plugs be replaced, and when should car spark plugs be replaced

How often do car spark plugs be changed?

Hello, generally 60,000 km replacement.

Due to the different materials of spark plugs, the types of spark plugs can be divided into: ordinary copper core, yttrium gold, platinum, iridium, platinum-iridium alloy spark plugs, etc., the service life of these types of spark plugs is different, and the corresponding replacement mileage is also different, so it is necessary to distinguish clearly when choosing.

Generally speaking, under normal use, the service life of ordinary spark plugs is 30,000 kilometers, while the service life of spark plugs of advanced materials is 6 to 90,000 kilometers. Do not extend it so that it needs to be replaced at the right time.

If you find that the fuel consumption of the vehicle increases, you can consider whether to replace the spark plug, and the general repair shop will recommend replacing it after 20,000 or 30,000 kilometers, because at this time, although the spark plug is not completely damaged, the efficiency has decreased. In fact, this is determined by the quality of the spark plug, the ordinary spark plug can be changed once every 3-40,000 kilometers, and the platinum and iridium can be changed once for 6 80,000 kilometers. Generally in the tens of yuan to a hundred yuan.

Then find a reliable repair shop for installation, the installation process is very short, you can generally check it yourself, which can not only save money but also avoid the black heart repair shop to reuse the half-used spark plugs removed from other people's cars.

The service life of the automobile spark plug is different according to the material of the spark plug, and it is not uniform.

The spark plug made of nickel is generally changed after driving 30,000 kilometers, and it is not necessary to insist on using it.

Platinum spark plugs must be replaced after 40,000-50,000 kilometers, and of course, if they are worn out, they should be replaced as soon as possible.

Iridium spark plugs, the material is more wear-resistant, and it is also safe and reliable when replaced after 100,000 kilometers.

No matter what material your spark plug is made of, you must insist on car maintenance to extend the service life of auto parts.

The flammable mixture is too thick. The remaining unburned part will accumulate in the spark plug electrode.

On carbonization, which leads to the abnormal ignition of the flower plug until it is damaged by charcoal. The reason for the excessive concentration of the combustible mixture is generally that the oil level of the carburetor is too high and the carburetor is dominant.

The air measuring hole is blocked, and the air filter element is seriously blocked. In addition, the choke door of the carburetor is stuck and cannot be fully opened, or the thickening valve is not working well, which is also the cause of the overconcentration of the combustible mixture.

2.Engine channeling oil. During the operation of the engine, if the exhaust pipe is blue.

Smoke, black smoke, indicates that excess oil is entering the cylinder, which will cause the spark plug electrode to be generated.

A large amount of carbon is deposited, or it is wetted by the engine oil and cannot jump the fire, this phenomenon is commonly known as engine channeling oil. For two-stroke engines, check whether the oil pump volume of the oil pump is too large, and whether the rod sleeve seal and check valve are invalid; For four-stroke engines, the activity on the piston should be checked.

Whether the plug rings, especially the oil rings, are worn. Then remove the intake valve and check the head and back for carbon deposits and wet grease. For example, the valve and valve guide are severely worn, the valve guide oil seal is hardened or the oil seal lip is worn.

Excessive, it will cause its fitting gap to be too large and lose its sealing effect. Both of these anomalies will eventually cause the oil in the rocker chamber of the valve to flow along the gas when the intake air is summed.

The door shaft is sucked into the cylinder, causing the phenomenon of burning oil. In this regard, the valve guide, oil seal or valve should be replaced separately depending on the wear and tear.

3.In the ignition system, magneto demagnetization, ignition coil and electronic ignition inside, generator output end and ignition coil loser end of wire connection loose, as well as incorrect ignition advance time, such as improper timing, can affect ignition performance, and ignition performance is poor, can directly cause spark plug electrode carbon deposit.

4.Pay attention to whether the model and calorific value of the spark plug comply with the provisions of the instruction manual. If.

When the calorific value is one or two gears lower than the instruction manual, the temperature of the spark plug will rise.

It is very high, and its heat cannot be dissipated in time, which causes abnormal combustion, and eventually leads to the melting of the spark plug electrode and premature damage. The spark plug itself is installed and used.

There are also some failures that are not easy to detect and also affect the ignition performance. For example, the spark plug is poorly sealed, the spark plug is not firmly fixed, the spark plug insulator is broken, etc., it should be adjusted in time or.

Replacement. 5.If the crankcase oil is filled too much, if the ventilation pipe is blocked, the pressure in the crankcase will increase and cannot be balanced.

The replacement cycle of spark plugs in ordinary cars is about 30,000 kilometers. According to the different spark plug materials, the replacement mileage is also different: the replacement mileage of ordinary copper core spark plugs; 30,000 km; Yttrium spark plug replacement mileage: 50,000 km; Platinum spark plug replacement mileage: 50,000 km.

Spike Pula, commonly known as burner, is used to release pulsed high-voltage electricity from the high-voltage line (burner line) to break through the air between the two electrodes of the spark plug and generate an electric spark point gas mixture in the gas cylinder.

General knowledge of spark plug maintenance.

1) Severe ablation of spark plugs. Scarring or damage to the tip of the spark plug or melting and ablation of the electrode.

1) The electrode is melted and the insulator is white. Indicates that the combustion chamber temperature is too high. It may be due to excessive carbon build-up in the combustion chamber, too little valve clearance, which causes the exhaust valve to overheat or the cooling device is not working properly, or the spark plug is not tightened according to the specified torque.

2) The electrode is rounded and the insulator is scarred. Indicates that the engine burned too early, it may be that the ignition time was too early or it was used. The gasoline grade is too low, and the calorific value of the spark plug is too high.

3) Cracking of the top of the insulator. Detonation combustion is the main cause of insulator breakage. But the ignition time is too early, and the gasoline grade is low. And the temperature in the combustion chamber is too high, which can lead to engine knock combustion.

4) There are gray-black stripes on the top of the insulator. This stripe indicates that the spark plug is leaking and should be replaced with a new one.

2) The spark plug has sediment. Sometimes the deposit sticks to the top of the insulator and between the electrodes.

1) Oily sediments. There are oily deposits on the spark plugs, indicating that the lubricating oil has entered the combustion chamber. If it is only a single spark plug, the stem oil seal may be damaged.

If the deposit sticks to the spark plugs of each cylinder, it indicates a cylinder leak. Check that the empty air filter and ventilation are not clogged.

2) Black sediment. There is a black deposit on the electrode and inside the spark plug, indicating that if the mixture is too thick, the engine can be increased to run at a rate of last minute, and then the black soot layer left on the electrode can be burned off.

1.Ordinary nickel alloy spark plugs.

This kind of spark plug has the largest number of vehicles, because his economy is particularly high, we can see this kind of spark plug in many models of about 100,000 and below, because of his stable performance and cheap, the doctor's price of this kind of spark plug is only about 10 yuan, and the most replaced is this kind of spark plug. Replacement mileage: about 30,000 km.

2.Platinum spark plugs.

This kind of spark plug, due to the upgrade of metal material, can be said to greatly improve the service life of our spark plug, so that our spark plug ignition is more stable and reliable, after all, the more expensive *** is used, so the life of the spark plug is improved. Replacement mileage: about 60,000 km.

3.Iridium spark plugs.

This kind of spark plug is more reliable than platinum spark plug, the life of the spark plug has also been improved, because the metal is better, so his conductivity is also better, can produce a stronger and more stable electric spark, many Nissan models are equipped with this kind of spark plug, replacement mileage: about 80,000 kilometers.

Ordinary spark plugs need to be replaced after 30,000 kilometers, platinum fire.

The flower plug is about 60,000 kilometers, and the iridium spark plug is 80,000 kilometers left.

Right is recommended to replace, a summary of common faults that occur in spark plugs.

There are two kinds: one is severely ablated by the spark plug, and the other is.

Spark plugs have sediment.

Spark plug ablationWhen the owner finds a scar on the tip of the spark plug.

Or when the electrode is damaged, melted, or ablated, it indicates that the spark plug has been destroyed and should be replaced.

Spark plug. During the replacement process, the owner can check the fire first.

The symptoms of flower plug ablation and the change in color are judged.

The quality of the spark plug directly affects the working effect of the engine, and the general replacement cycle is 2-100,000 kilometers. In the case of more mileage exceeded, the light one will have the symptoms of weak acceleration and fuel consumption, and the heavy one may also damage the engine, so the spark plug should be replaced in time.

First, the engine shakes badly.

The engine of the car can be started smoothly occupies an important role, and the spark plug is the key part, whether the car can run stably and continuously, it depends on whether the engine is powerful, but whether the engine can work normally, without the best flower plug, once there is abnormal shaking, pay attention quickly, otherwise the engine will be overhauled.

Second, abnormal starting.

As long as it belongs to a type of motor vehicle, the spark plug is indispensable, which directly affects whether your motor vehicle can hit **, if it lasts for a long time and can not catch fire, it means that the spark plug must be replaced, don't wait until the car turns off and can't move, then it's too late.

Third, there is a situation of shrugging.

Under normal circumstances, the car is relatively stable, and there will not be much abnormal movement, but when the car is sensational, it may be insufficient fuel supply, and the driving is fast and slow, which is the result of the instability of the spark plug.

The time to replace the spark plug is different for different materials. For example, the spark plug made of ordinary nickel alloy may need to be replaced once in about 20,000 kilometers. This kind of spark plug is commonly found in low- and medium-sized models, and is used more in domestic cars.

In addition, some spark plugs have a longer life, iridium spark plugs are currently widely used, the stability is relatively strong, commonly used in high-end cars, it is also called enhanced spark plugs, which can generally be replaced once for about 60,000 kilometers. In addition, there are platinum spark plugs, which have a longer life than iridium spark plugs, and can be used for about 80,000 kilometers or even longer, but if you look at the performance, it is similar to the iridium spark plug. There is also an ultra-high-end material spark plug, the platinum spark plug, which can be used for more than 100,000 kilometers, and the performance is also excellent, but it is not widely used.

Replace it every 2 years, the replacement cost is not expensive, and it is easier to change the light.