What are the causes of the shaking of the car?

The most common cause of car shake is that the throttle is too dirty or the injector has too much carbon. When there is too much carbon inside the engine, the gasoline emitted from the cold-start injector will be absorbed by a large amount of carbon deposits, resulting in a thin cold-start mixture and difficult start-up. In this case, it is easy to start the car only when the gasoline adsorbed with carbon deposits is saturated, and the gasoline adsorbed on the carbon deposits after starting the car will be sucked into the cylinder by the vacuum suction of the engine for combustion, so that the mixture becomes thicker, the combustible mixture of the engine becomes thinner and thicker, and it will cause idle shaking after cold start.

The lower the temperature, the greater the amount of oil required for the cold start, and the more carbon will be deposited, which will affect the success of the cold start.

The car felt a little shaky when it started, and I suspected that there was something wrong with the tires. If the lead of the original wheel balance is lost, the wheel hub is deformed, and at high speeds, the hair of the car will swing and the steering wheel will shake. In actual use, factors such as tire repair, tire rim deformation, and inconsistent number of front tire bolts will all lead to tire dynamic imbalance.

At the same time, if the steering tie rod and the steering tie rod are deformed due to collision during the driving of the car, the ball joint of each part is worn loose or the tire is worn irregularly, which will increase or decrease the toe-in. This will happen. Loose ball joints of lateral actuators or loose brackets cause the car to run unsteadily.

The bearing hub is loose, and the ball joints of the left and right steering joints are seriously worn, so that the front wheel alignment of the car is not accurate. There is also clearance caused by excessive wear and tear on the vehicle's lower arm bushings.

When we step on the accelerator, the vehicle will shake a little, most of the time it is the throttle. Generally, dirty throttles will cause the body to shake. When carbon deposits or other pollutants are adsorbed on the throttle valve, there is an imbalance between the amount of air drawn in the engine and the amount of oil ejected from the injectors, resulting in a lack of fuel when the engine is working, which causes the body to shake.

In this case, it is enough to go to the repair shop to clean the throttle.

If the car wants to avoid shaking, it is necessary to ensure the concentration of the mixture, which directly determines whether it can be fully combusted. The more stable the combustion, the less jitter. Gas mixtures involve not only the oil supply system, but also the gas supply system.

Fuel supply systems, such as injector failures, uneven injection and incomplete atomization, fuel pumps, fuel filters, oil pressure regulation, etc., can cause problems with fuel supply and fail to meet the expected fuel supply requirements.

Analysis of the causes of car shake:

1. Suspension system problems.

Body shake is also related to the aging of the suspension system. It is mainly responsible for filtering out the shake of the engine when it is running, and if there is a problem with the suspension, these vibrations will be transmitted directly to the steering wheel and cab, affecting the driving. When the engine is idling, it is easy to cause shaking when the electrical system in the car is turned on.

The engine will increase the load when the electrical appliances are turned on, causing the idle speed to drop, and to compensate for the jitter caused by the idle slip, the engine will automatically increase the speed by partially. So, when the electrical system, especially the air conditioner, is turned on, the engine will often shake. This jitter is likely to be caused by the aging of the shock absorber and needs to be replaced in time.

2. Tire problems.

For tires, the tire must be balanced once when the car is replaced with new tires and new steel rims, otherwise the steering wheel will be prone to shake when the counterweight is uneven. If you find that the tire weight is not equal, you need to add lead to the inside of the rim to average the weight of the tires on both sides. Whether it is a general steel ring or a lightweight aluminum ring, it may deform or crack when subjected to a certain external force.

Deformation of the rim can cause shaking when driving, uneven weight of the rim can also cause shaking when driving, and incorrect angle of the rim can also cause shaking when driving.

3. Throttle problems.

The most common cause of car shake may be a dirty throttle valve and excessive carbon build-up in the fuel injector. After the car travels for a period of kilometers, the throttle valve will be too dirty to cause the throttle to close loosely or the idle motor to stagnate, resulting in the engine idling speed is too high, and the carbon deposits generated by the engine in this process will also cause the vehicle to shake, especially when starting the vehicle, the engine will shake more than normal, and even sometimes there will be a phenomenon that can not be started at one time. Therefore, when the body shakes, the first thing to do is to check the throttle and fuel injectors.

If you find that the throttle valve is too dirty or the fuel injector has too much carbon deposit, you should clean it with fuel injector cleaner or throttle cleaner in time.

4. The oil pressure is unstable.

If you still find that the body shakes after these are finished, it is recommended that you go to the repair shop to check whether the fuel supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is not normal, the intake pressure sensor is wrong and improper work will cause the body to shake.

The main cause of idle jitter;

1. The most common cause of vehicle shaking is that the throttle is too dirty or the fuel injector has too much carbon.

2. When the carbon deposition inside the engine is too much, the gasoline sprayed by the cold start fuel injector will be absorbed by a large amount of carbon deposition, resulting in the mixture of cold start being too thin, making it difficult to start, in this case, only when the gasoline absorbed by carbon deposition is saturated, it is easy to get started, 3. After the car is adsorbed, the gasoline adsorbed on the carbon deposition will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture becomes thick, and the combustible mixture of the engine is dilute and thick, resulting in idle shaking after cold start. The lower the temperature, the greater the amount of oil required for the cold start, and the more carbon deposits will affect the smooth cold start.

Severe idle vibration is generally caused by engine cylinder failure, aging or loose foot rubber, carbon deposits, fuel system failure, etc.

Solution; The best way is to clean the oil circuit, clean it regularly, and use PNF fuel additives to solve the above problems caused by carbon deposits. The fuel quality is not very good or the initial fuel of the new car is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage, and the carbon deposition exceeds the standard, which is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits.

If carbon deposits occur in the valves and intake tracts of the engine, the ECU will make an error in judgment because the carbon deposits can absorb the appropriate amount of fuel. If the computer actually controls the injection of hypothetical 100 parts of oil and gas, but only 90 parts actually enter the cylinder (10 parts are absorbed by carbon deposits), then even if the remaining 90 parts of mixed oil and gas are fully combusted, this cannot achieve the required power, and the phenomenon of jitter is inevitable.

Causes of idle jitter:

1. The engine has serious carbon deposits. The most common cause of idle judder is excessive carbon build-up on the throttle or injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by the carbon deposit, resulting in a mixture that is too thin and making it difficult to start.

After landing, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine and burned, which will thicken the mixture. The mixture is sometimes dilute and sometimes thick, which will cause idle jitter after cold start. The lower the temperature, the greater the amount of oil required for cold starts, and the more the presence of carbon deposits affects cold starts.

The solution is to clean the carbon deposits at the throttle and injector.

2. Poor ignition system and poor ignition of spark plugs will also lead to engine idling and shaking. If there is a problem, check if the ignition system is faulty and if there is too much carbon deposited in the spark plug.

3. The oil pressure is unstable. If you have cleaned the engine carbon deposits, cleaned the throttle valve or replaced the spark plug, and there is still the problem of body shaking when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal. If the oil pump supply pressure is not normal or the intake pressure sensor is incorrect, it can also cause the body to shake when idling.

Solution; The best way is to clean the oil circuit, clean it regularly, there is no specific experience in the research and development parameters of the clean engine from the new car, coupled with the continuous improvement of emission standards, can not adapt to the change of fuel, all manufacturers of the engine are unable to solve this jitter problem in the short term, plus the fuel quality is not very good or the initial fuel of the new car factory is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage. The occurrence of excessive carbon deposits is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits. The use of PNF dope fuel additives can solve the problems caused by carbon deposition.

Causes of automobile shaking: 1. The engine has serious carbon deposits, when the engine has too much carbon, the gasoline sprayed by the cold start injection head will be absorbed by a large amount of carbon deposits, resulting in too thin the mixture of cold start, resulting in difficulty in starting; 2. The water temperature of the car is too high, and the operation for a long time will cause the engine to heat up, and the water temperature will also shake if it is too much; 3. Problems with any one of the intake, spark plugs, and fuel will cause the engine to run unsmoothly.

The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be absorbed by the carbon deposit, resulting in the cold start mixture being too thin, making it difficult to start.

It may be that the carbon deposition in the intake pipe of the engine is more serious, it may be that the spark plug is damaged, it may be that the water temperature in the engine is abnormal, and it may be that the fuel injector is blocked. It may be caused by sudden acceleration or pressing the accelerator.

It may be that the throttle is too dirty, it may be that the fuel injector is more serious, it may be idle in neutral in situ, it may be caused by sudden acceleration after shifting, it may be a problem with the balance of the vehicle, it may be that the 4-wheel alignment is not done well, and it may be that the tire pressure is unstable.

The car parts are worn, the steering rod is problematic, the tires are problematic, the transmission bearings are problematic, the engine is problematic, because of these reasons, the car will shake when driving.

The car has been used for too long, the parts inside the car are damaged, the engine has problems, it is overloaded, and there are problems with the wheels of the car.

The car will shake when driving, this is because the internal parts of the engine have been aged, due to too much loss, the engine will be very difficult to drive the car, so the car will shake when driving. Another reason why the car shakes when driving is that the car has carbon deposits on the throttle valve for a long time, resulting in an unobstructed oil circuit, resulting in the car's engine being in an idle state, so the car begins to shake. In life, if you encounter the situation of car shaking, don't worry, because these are small problems, if the car is shaken due to the car's carbon deposit, you can choose to wipe the position of the throttle and oil plug with a clean and soft rag.

If you encounter the problem of engine aging, it is generally because the rubber strip and sealant of the engine have aged, and you only need to replace the rubber strip and sealant.

First, the car shakes when driving, this is because the accessories inside the car engine have been aged

When the car is purchased for too long, it is possible to shake. This is because some parts inside the automobile engine have been aged, and most of the cases are because rubber products such as rubber strips and sealing rings have poor elasticity due to their long service life, and they cannot be sealed. Generally, it is very cheap to replace the rubber strip and sealing ring of the engine, and you only need to spend dozens of yuan to buy one.

You can also find some repair shops on your own, and you won't shake these when you replace them.

Second, the car shakes when driving, which may also be caused by carbon deposition in the car

When you drive a car, you must pay attention to cleaning the throttle of the car, which is the easiest place to accumulate carbon. If the car shakes when driving, most of the reasons are caused by a lot of smoke and dust on the throttle. There are also some car drivers who fill up their cars with petrol and do not go to regular gas stations, but choose some cheap private gas stations.

If the oil is not good, it is easy to cause the car to shake.

So, do you know what else causes a car to shake?

It may be because the throttle is dirty, or there is a lot of dust on the side of the fuel injector, in which case there is often a shaking, and it is necessary to clean it in this area.

The car shake may be caused by the throttle is too dirty, the paint nozzle has too much carbon, and the idle speed is poor, and the spark plug and high-pressure bag of the car are working properly.

It may be because some parts of the car are too dirty, or it may be that there is too much dust accumulation in the fuel injection area, and we will not have such a phenomenon if we have to clean the car frequently.

It may be that the handbrake is not down. This situation generally occurs in manual transmission cars, the handbrake is not lowered, and the car will be like this when it is turned on, just put the handbrake down.