Car knowledge: teach you to replace car spark plugs by yourself

Spark plugIs familiar to uscarDaily consumables, but most car owners are not concerned about such common parts. As the core of a car engine, the performance of the spark plug can almost directly determine the performance of a car, so we recommend that you always check the spark plug of your car.

1. How to judge the life of spark plug

The spark plug is an indispensable component for the normal operation of the engine. After the mixed gas is sucked into the cylinder and compressed, it must be ignited by the spark plug to complete the work. Therefore, to a certain extent, the performance of the spark plug will directly affect the ignition of the mixed gas. However, the electrode of the spark plug is also consumed during this ignition process. According to the melting point and hardness of the electrode material, the electrode will gradually be consumed. When the electrode gap is too large, the vehicle will have problems such as power drop, cold start difficulty, and increased fuel consumption. At this time, it is best to consider replacing the spark plug. Generally speaking, the normal service life of ordinary family car spark plugs is about 20,000 kilometers. In addition, in order to extend the durability of spark plugs, some manufacturers will use platinum, iridium and other precious metal materials in the electrodes, while also increasing the intensity of ignition energy.

2. Do you need to upgrade spark plugs?

Generally speaking, the original spark plugs are strictly tested by the factory, which can fully meet the needs of daily driving, and they have reached the best balance between economy and power. However, due to cost control factors, the original spark plugs generally will not choose spark plugs with better performance, so for some car owners who are pursuing the ultimate performance, they can also consider upgrading the spark plugs appropriately. However, the following principles should be followed when upgrading: 1. The model of the spark plug should match the engine type of the car. 2. The calorific value is an important reference index when selecting spark plugs. The calorific value of the original spark plugs has generally been comprehensively considered for various road conditions, but some modification enthusiasts like to upgrade to high calorific value spark plugs.It should be noted that although high calorific value spark plugs are more suitable for highRotating speedA running engine, but if it is used under long-term traffic jams, it will produce excessive carbon deposits. Therefore, a spark plug with a moderate calorific value should be selected according to the purpose. 3. For a new car whose warranty period has not expired, some manufacturers will refuse to provide warranty service if the spark plug is replaced privately.

Third, how to replace the spark plug by yourself

Regardless of the importance of the spark plug, it is very easy to disassemble.Generally speaking, the spark plugs of most cars are exposed to the outside of the engine (except for some high-end cars).Guard plateOpen, and then connect to itHigh-voltage lineAfter pulling it out, the spark plug will be exposed to you.However, you still need some common sense if you want to disassemble the spark plug by yourself. The first is to use a professional hex socket to disassemble the spark plug.wrench, And the whole process of disassembly and installation must not allow external oil to enter the cylinder, and then tighten the spark plug according to the principle of vertical disassembly and assembly of the spark plug.

In fact, another advantage of replacing spark plugs by yourself is that you can find faults in your car early. For example, after disassembling the spark plug, you can also take a look at the color of the spark plug. If there are black carbon deposits near the electrode, it means that the car’s combustion is not good enough during this period. The mixture is too thick and the oil burned may be the culprit; and when the electrode is found to be reddish-brown, it means that it has been used recently. If the gasoline is unqualified, you need to pay attention to the quality of the fuel to avoid greater losses. In short, by doing it yourself, you can not only cultivate the relationship with the car, but also let you know more about automobile common sense. It can be described as killing two birds with one stone. (Hexun Automobile)