What is the reason why the scooter is cold and difficult to start

If the warm weather is not very good to start, you need to check specifically, there are too many reasons! The cylinder pressure caused by the valve leakage and weak acceleration, the large cylinder-ring clearance and the burning of engine oil must be overhauled. Check the gasification of the carburetor, you can increase the idle number a little and the mixing ratio slightly thicker.

In winter, the temperature is below zero, and the engine oil needs to be changed to 5w30, and the Shell Prince Ed Yellow Bottle is good. The battery is charged frequently, such as it has been three years, and it is good to replace it, Unity or Yuasa. Check the spark plug, if it doesn't work, change it, NGK is good.

To talk about skills in cold start, you can start without unscrewing the key door and stepping on your foot a few times. Then unscrew the key door, give a little throttle, and press the start button again.

The scooter is not easy to start when it is cold, and there are reasons such as leaking air in the engine compression chamber or too thick oil.

The high-voltage fire is weak or the two electrodes of the spark plug are short-circuited and the fire is scattered.

The carburetor is blocked, the oil supply is small, or the electronic damper is faulty and does not work properly.

Inspection and repair can be solved.

The scooter choke is electric, and the electric choke cannot achieve the choke effect of the ordinary carburetor manual choke, and the concentration is not enough, so it is difficult to start. It is recommended to clean the carburetor, change the DC ignition, and replace it with a high-quality spark plug to solve this problem.

If the power is insufficient to bring the starting motor to the highest speed, so that the engine can not reach the lowest ignition speed can also lead to this problem, you can first check whether the discharge current of the battery is too low, and check the effect of the starting relay. Finally, check whether the number of starter motors is damaged (usually the carbon brush of the starter motor is easy to break).

It is normal for the cold car to pull the damper to start, if you don't pull the damper in cold weather and cold car, then you have to design the damper for something. If it is too difficult to start when the car is cold, or there is a bad start or unstable idle speed when the car is hot, you can first check whether the damper of the carburetor is normal, whether the mixing ratio and oil level are appropriate, and the blackening of the spark plug is related to a variety of situations, such as improper mixing ratio, bad gasoline, often running short distances or low-speed driving, etc., if the quality of the carburetor itself is too poor, it will also cause the spark plug to be blackened and not good to start. The carburetor must be replaced, and the inferior or pseudo-branded carburetor must be replaced in vain.

In addition, check whether the valve clearance is too small, whether there is aging and air leakage in the intake pipe, whether the spark plug itself is not good, the electrode clearance is too large, and the model is not suitable.

The carburetor electronically controlled damper does not work

The motorcycle is not easy to start when it is cold; The damper must be pulled to start; How to fix this; The master teaches you.

Summary. This cold car is not easy to start, if it is a motorcycle with this carburetor, if this phenomenon occurs, it is necessary to replace the spark plug, and it is necessary to clean the carburetor to see if the carburetor is blocked. If this is an EFI engine, if this phenomenon occurs, it is necessary to replace the spark plug, and it is necessary to check the fuel injector to see if there is any blockage.

There is also a need to check the engine cylinder, if there is more low carbon, it also needs to be cleaned, these aspects need to be specifically inspected, processed and repaired, which will lead to the phenomenon that the engine is cold and not easy to start.

The 125 scooter is not easy to start when it is cold.

Hello, this question can give you a perfect reply, wait for me to sort out the information, I'm typing, 2-3 minutes, don't finish.

This cold car is not easy to start, if it is a motorcycle with this carburetor, if this phenomenon occurs, it is necessary to replace the spark plug, and it is necessary to clean the carburetor to see if the carburetor is blocked. If this is an EFI engine, if this phenomenon occurs, it is necessary to replace the spark plug, and it is necessary to check the fuel injector to see if there is any blockage. There is also a need to check the engine cylinder, if there is more low carbon, it also needs to be cleaned, these aspects need to be specifically inspected, processed and repaired, which will lead to the phenomenon that the engine is cold and not easy to start.

In winter, the temperature is low, and the motorcycle.

The cold start performance of the car will be reduced, which.

is not completely.

Avoid. Cause pedals.

The low temperature starting performance of motorcycles is not good, and the more common reasons are low cylinder pressure and poor carburetor performance. The low cylinder pressure mainly checks whether the valve clearance is too small (scooters are more prone to this situation), whether the valve is not closed tightly due to carbon deposition and wear, and whether the cylinder block, piston, and piston ring are worn. Check whether the carburetor electronic control damper is not working well, whether the mixing ratio is too thin, whether the carburetor itself has poor performance, etc.

Other factors such as poor spark plugs or excessive electrode clearance, weak high voltage electricity, slight air leakage in the intake pipe or other hoses related to the engine, carburetor and fuel tank switch, etc., will make it difficult to start the cold train. In addition, in winter, you can not open the key before starting, step on it a few times with your foot start, and then open the key Zhao Gong, which will also help with cold starting, and generally do not twist the throttle when starting.

This is the carburetor for the sake of the carburetor, this carburetor is a bucket carburetor, also called a plunger carburetor, the carburetor is characterized by a light start when the weather is cold, it is not good to start, the reason is that the concentration of the mixed gas is diluted, this is a feature is not a disadvantage, the advantage of the plunger carburetor is fuel saving, which is the same as Wuyang Honda, it is not easy to start in cold weather.

The solutions to this problem are:

First, immediately open the damper, electric start without the accelerator, in the case of pressing down for no more than 5 seconds, you will find that the speed will soon go up, in fact, this hurts the car, what you have to do is to immediately close the damper by half, so that the speed is not very high, and wait for 2 or 3 minutes to warm up, you will turn off the damper, and you can drive.

Second: You can slightly increase the concentration of the carburetor mixture so that it can be activated without hitting the damper, but the problem is that your fuel consumption is a little higher.

If you still can't start this method, it is recommended to go to the special repair station to check.

The motorcycle is not easy to start when it is cold, especially in winter, it is particularly difficult, the master will teach you a trick to solve it!

The scooter is difficult to start cold, and there are many possible reasons, mainly including:The carburetor mixing ratio is too thin or the automatic enrichment device (i.e. the electronically controlled damper) does not work, the quality performance of the carburetor itself is too poor, the cylinder pressure is low, the valve or the intake pipe and other hoses leak slightly, the gasoline oil quality is not good, the high pressure is weak or the spark plug is pooretc., these are common reasons why the scooter is cold and not good to start.

If it is only in the winter when the weather is very cold, it is relatively normal for the scooter to have difficulty starting the cold car, and the cold start performance of the motorcycle will be reduced when the temperature is low, which cannot be completely avoided. But if it's not winter, or even if it's winter, it's not normal to start too hard. As in this case, it can be checked separatelyWhether the mixing ratio of the carburetor is too thin, whether the automatic enrichment device, that is, the electronically controlled damper, can not well concentrate the mixture when the cold car starts, whether the quality of the carburetor itself is too poor or aging, whether the negative pressure fuel tank switch is damaged or the gasoline seeps from the suction pipe causes the cylinder to be flooded, etc.

Other aspects can also be checkedWhether the cylinder pressure is low due to the wear of the cylinder block, piston and piston rings, whether the valve clearance is too small, or whether the valve is not closed tightly due to carbon deposits, wear, ablation and other reasonsCheck the air intake pipe and other hoses related to the engine, carburetor, negative pressure fuel tank switch, secondary air intake system, etc. for air leaks. CheckWhether the spark plug is bad or the electrode gap is too large, whether the high-voltage electricity is weak in fire, whether the gasoline oil quality is not good, etcThese are also the main reasons why the scooter has a difficult cold start.

1. The problem that should be eliminated is whether the ignition method is correct, the ignition switch should be pressed without screwing the throttle at first, and the ignition should be properly twisted in the case of failure to start, some car owners may like to greatly twist the throttle to ignite, which may not be easy to get on the car and easily make the spark plug work invalid.

2. It may be that the car is not properly maintained or has not been maintained for a long time. Check whether the fuel quantity is sufficient, whether the spark plug electrode is normal, whether the oil quantity is normal, whether the oil calibration working temperature is higher than the actual temperature, and whether the air filter is blocked. Different grades of engine oil adapt to different temperature environments, and if you use high-viscosity engine oil in a low temperature environment, it may make it difficult for the engine to do work, so that it cannot start properly.

3. In the case of normal maintenance of the vehicle, we should check whether the engine, carburetor, ignition and oil supply system are faulty. The carburetor is the most complex part of a motorcycle, and if it is not properly adjusted due to lack of experience, it can cause a lot of trouble. Some car owners may unscrew the idle screw and the mixing ratio screw in order to save fuel, resulting in abnormal oil supply to the carburetor.

Some service point maintenance workers are inexperienced and may mismatch the systems inside the carburetor, resulting in the engine not working properly. Secondly, a drop in cylinder pressure due to abnormal valve clearance may also affect start-up.

4. To sum up, the reason for the difficulty of cold start exists in all aspects of the motorcycle, and the reason may be found by testing according to the above ideas. Finally, I remind the owner that if you want to reduce the probability of car failure, it is recommended that you maintain it regularly in accordance with the maintenance manual, and the car may be more reassuring to ride in the best condition.