Detailed operation of replacing S90 original ignition plug
RobertJoyce 
12 As we all know, the basic working principle of spark plugs is to generate electric sparks through excessive high-voltage current, which is responsible for igniting the ignition device of the mixture when the engine is running. Spark plugs can be divided into nickel alloy type, platinum alloy type, and iridium alloy type according to materials. In essence, they are not vastly different. Whether they are high, medium and low-end vehicles, the vast majority of overhead valve models use single-sided electric-grade spark plugs, and multi-sided electric-grade spark plugs are of little significance. At present, precious metal electric-grade spark plugs with high-end materials, such as platinum alloy type and iridium alloy type, are only different from the nickel alloy materials we commonly use in terms of durability and corrosion resistance, but they are also expensive and have nothing to do with improving power; After all, the spark plug is just an ignition device. As long as the ignition is normal, the engine will work normally. The so-called effect of improving power and saving fuel consumption is indeed negligible. My car has been 65,000 kilometers old, and I obviously feel that the speed is not accelerating recently. Obviously, fuel consumption has increased, so I plan to replace it
Ready to go
take a shower first
sparkling
Dapeng wings
Handsome profile
Let’s get started. Remove the hood first.
Spark plugs have a service life and will cause carbon deposition during use. If they are not replaced regularly, the engine will experience difficulties in starting, insufficient power, increased fuel consumption, and excessive exhaust emissions.
neat cabin
Start taking ignition coil
This is the construction diagram of the spark plug. During the ignition process of the car, the gap between the electrode on the side of the head of the spark plug and the central electrical level will change due to aging. When the gap becomes larger, the breakdown voltage required by the spark plug will also increase, and eventually it will be difficult to ignite, causing the engine to “misfire” phenomenon; when the gap is too small, the spark produced will be too weak, which will not only be easy to detect leakage, but also easy to accumulate a large amount of carbon deposits, which affects the combustion efficiency of the engine. So that’s why we need to replace it.
If you want to change, change to the original factory. It has a high match.
other
At present, platinum spark plugs have become very popular, while iridium alloy spark plugs have been used by manufacturers when loading vehicles. Iridium alloy spark plugs have better ignition properties. Their electrical conductivity and hardness are higher than platinum spark plugs, but their price is also higher than platinum spark plugs, and their life span is generally only 20,000 to 30,000 kilometers. Engines that use iridium alloy spark plugs run smoother and speed up faster.
Imports are so fragrant
Xiang
Brake pads are inserted indiscriminately
This old spark plug can be seen to be covered with oil.
ignition coil
By measuring that the gap in the spark plug has obviously become larger, which is why the acceleration is weak and the fuel consumption is increased. Please remind me that because the spark plug has been exposed to a high temperature environment for a long time, in order to avoid burns, friends should not directly contact it with their hands and need to wear gloves.
Shoot down and wait for me quietly
Spark plugs must be replaced together, because the performance of the spark plug is a process of gradually weakening. Even if the other spark plugs are much better than the broken spark plug, there is still a big gap between the ignition ability of the new spark plug. If only one is replaced, the cylinder with the new spark plug will burn fully, be efficient and have sufficient power, while the other few are obviously not as good as it. Under such operating conditions, the entire engine will be likely to shake.
Problems such as abnormal noises.
Problems such as abnormal noises.
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