There is a short and precise part on the locomotive. The original part price is less than 50 yuan, but it can control whether your engine is launched or not. He is a "spark plug". It is not only responsible for the ignition of every explosion in the cylinder, but also can see from the spark plug whether the combustion condition of an engine is normal and whether the adjustment is just right.
Data source: NGK
First of all, simply understand the working environment of the spark plug. The spark plug is under the high voltage point of 20,000 volts to 30,000 volts, which generates a power jump, creates a spark, and ignites the explosion of the chain reaction of oil and gas in the cylinder. At the time of the explosion, the spark plug must withstand a pressure of 50 kg per square centimeter, which is equivalent to 51 times the atmospheric pressure. The high temperatures generated by oil and gas explosions range from 2,000 degrees Celsius to 2,500 degrees Celsius. And after the gasoline is burned, it will produce compounds such as lead, phosphorus and sulfur, which will corrode the electrodes of the spark plug.
In summary, a good spark plug must be able to:
1. Produce a good spark under high pressure
2. Can withstand high pressure, high temperature
3. The electrode material must be resistant to corrosion
Spark plug and engine combustion situation Simply put, the state of the spark plug can reflect the temperature and combustion of the engine. Generally, it can be divided into "good", "blackened" and "excessive combustion".
The spark plug is blackened, which means that the engine is burning too low, and a large amount of carbon deposits are attached to the spark plug. When there is too much carbon deposit, there is a possibility that the spark plug will not ignite. The possible reasons for this are as follows:
1. The oil and gas is too rich (the carburetor needs to be adjusted, the fuel injection computer needs to be adjusted, or the related originals are bad)
2. Poor power system (high voltage wire breakage or cracking, etc.)
3. The operating conditions are not suitable (long-term idling or low-speed operation, simply saying that riding is too slow...)
Excessive combustion of the spark plug means that the engine is burning too high, and the insulator that generates the jump will become incandescent, and the deposited deposits will form a spot. Excessive temperature of the spark plug may induce ignition early, causing engine damage, and long-term high temperature may cause the spark plug to melt and damage. The possible reasons for this are as follows:
1. Ignition is too early (the ignition must be adjusted or the related originals are bad)
2. Oil and gas are too thin
3. Insufficient cooling water and lubricating oil
4. Produce knock
5. The spark plug is not tightened when it is installed 
When the engine is in good condition and moderate, the electrode of the spark plug will be brown (not too white or black due to excessive carbon deposit) 
Spark plug is a consumable
In addition to the combustion state of the engine from the spark plug, many people often forget that this small thing is also a part of the consumables. The electrode itself will gradually wear out due to the corrosion of various compounds over time, which will affect the ignition. The effect naturally affects the engine's burning condition. Therefore, it is necessary to see from the spark plug whether the combustion condition of the engine is OK, and don't forget to use the normal un-damaged spark plug as the reference.
Speciality Silicones,Linear Polysiloxane Compounds,Silicone Oil For Treadmill,Silicone Oil For Lubricant
Henan Minmetals East New Materials CO. LTD. , https://www.minmetals-easts.com