1. Press the horn and judge whether the battery power is enough according to the intensity of the horn sound. Otherwise, check whether the electrolyte is sufficient and whether the battery case, plates, etc. are damaged. are damaged.
2. Check the spark plug. Depending on the strength of the spark from the spark plug, one can determine whether the fault is in the ignition system or the fuel system. Ignition system faults typically include: dirty spark plugs, broken high voltage lines or poor contact, broken induction coils, capacitors and diodes. The transistor circuit is damaged, the ignition switch and main switch are not turned on or the circuit is open, the power-off switch gap is incorrect, or the surface is uneven.
3. Remove the spark plug, run the engine and judge whether there is a problem with the ignition system.fuel supply or ignition time depending on dryness, humidity and exhaust odor. If the spark plug is dry and the engine is running at the same time, and the gas discharged from the spark plug hole is dry and odorless, it means that the mixture has not entered the cylinder. You need to check whether the fuel tank switch, oil pipe and carburetor are blocked; if the gas discharged from the spark plug hole contains gasoline. If there are no obvious oil droplets discharged when a white paper is placed near the spark plug screw hole, the mixture is too thin if the spark plug is too thin. is very wet, the mixture is too rich.
4. Remove the magneto cover and check the ignition time. If the ignition time is incorrect, adjust the circuit breaker. If the ignition time is accurate, clean the circuit breaker.
5. Install the gaugemeter of the cylinder and check if the compression pressure is less than 600 kPa, this is an internal mechanical failure of the engine. For example: the seals at the cylinder and crankcase gaskets are damaged, the crankcase oil seal is leaking or the mounting bolts are loose If the compression pressure is higher than 600 kPa, check whether the exhaust system is blocked.
If there is no cylinder pressure gauge, you can remove the spark plug, plug the spark plug hole with your fingers, and then crank the engine if you feel a hard shock with your fingers and a “pop”. "A noise is made in the cylinder, it indicates the compression pressure. If it is higher, the crankcase seal is good; if there is no impact on your fingers but it is difficult to run the engine, it means there is an air leak in the crankcase, or there is an air leak between the piston ring and the cylinder
6. Rremove the silencer. If there is too much carbon deposit, the exhaust system is blocked.
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1. The electric starter usually turns on as soon as it is turned on if it does not turn on after two or three times, Do not use the electric starter. The reason is that the battery is still in use. If the power cannot be turned on, the battery may easily collapse, discharge and cause battery damage.
2. Use kicks. In winter, the temperature is low and it is easy not to light the fire. Next, you need to tighten the gasket (also called choke). be pressed down. When starting the cold car in winter, it should be dialed up and placed in the middle about 15 seconds after getting into the car. When the car has finished preheating, return to normal state - press everything. the path. This process takes approximately three to five minutes.
3. Concerningthe idle speed problem, sometimes the ignition cannot start because the idle speed is low. Normally in summer it is enough to set the mileage indicator to one division or more than one point. In winter, adjust it to more than one and a half and less than two.
4. If the spark plug is defective, simply replace it. Sometimes the oil disappears. Dip your mouth and see if there is oil on the candle head. Whether it is wet or not, it will not catch fire.
5. The carburetor is defective. After a long time, the carburetor should be cleaned.
6. The weather is cold in winter, so it is easy to find a fire. The southern climate is hot, so unless the motorcycle itself breaks down, there will be no misfires. When spring begins in the Northeast or when autumn is about to enter winter, the morning temperature is below 0 degrees Celsius and the engine oil condensese, preventing the engine from starting a fire.
Reference documents
Baidu Encyclopedia - Motorcycles