What is the problem with the shaking of the lower body, the shaking of the body, what is the situati

1.Serious carbon deposits in the engine The most common cause of car shake is a dirty throttle valve or excessive carbon deposit in the fuel injector. When the carbon deposition inside the engine is excessive, the gasoline sprayed by the cold start fuel injector will be absorbed by the carbon deposition in large quantities, 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 on the car, and the gasoline adsorbed on the carbon deposition after the car 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, causing 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. Solution: Clean the oil circuit and check whether the idle motor has carbon deposits and should be cleaned.

2.Ignition system problems Check the working condition of the spark plug, high-voltage wire and ignition coil, the ignition system is not working well, and the spark plug flashing condition is not good will also lead to this kind of failure. Solution: Check whether the spark plug has too much carbon deposit, and replace the spark plug.

3.If you have cleaned the engine carbon deposits, washed the throttle, changed the oil pad and spark plug, etc., and still found that the body shakes when idling, it is recommended that you 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 abnormal or the intake pressure sensor value is wrong and the work is not good, the body will shake. Workaround:

Check the oil pressure and replace parts if necessary.

4. Aging of engine parts Automobile shake is also related to the aging of engine feet.

Do a dynamic balance or four-wheel alignment, adjust the toe-in, inclination.

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.

Causes of body shake when the car accelerates:

1.It is normal for the car engine to shake when driving, and sometimes it will not start once. It may be that the throttle valve is too dirty, and the fuel injector and air intake tract have too much carbon deposit.

In the case of a cold car, carbon deposits will absorb a part of the fuel, and if the fuel does not completely enter the cylinder for combustion, it will produce symptoms of unstable idle speed and difficulty in starting.

2.At a certain speed at high speeds, the steering wheel can feel noticeable shaking or jumping, but not at low speeds. In fact, there are many problems that cause automobile engine shaking, here we must first rule out the abnormal shaking caused by engine failure, because engine failure generally occurs at low speed.

How to shake the body when the car accelerates:

If the acceleration shake of the car is obvious, you can first visually check whether the balance lead on the rim is missing, or whether the wheel hub is obviously deformed. If all of the above is a problem, then we need to resort to professional inspection equipment, because the steering rods, suspensions, and subtle deformations of the wheel hub are difficult for us to discern with our eyes. First of all, check whether the left and right half shafts are bent, and then disassemble and check whether the inner walls of the left and right inner cages are worn and pitted, which is caused by damage to the inner cage in most cases.

Modern cars are mostly front-engined and front-driven, and their inner cages are mostly retractable to adapt to the change of the relative position of the gearbox drive terminal and the drive wheel when the vehicle is driving. After dismantling and inspection, it can be found that the part of the inner wall of the inner cage that is in constant contact with the outer skin of the needle roller bearing, that is, the part where the torque is transmitted (the stress point), has produced pits. When the vehicle accelerates sharply, the engine gearbox assembly has to do a slight side flip action, thereby changing the position of the above-mentioned stress point, because there is a certain angle between the axial direction of the half shaft and the axial direction of the inner ball cage, so this stress point is continuously reciprocating along the axial direction in the process of ball cage rotation, and the force generated by this change continuously pushes the body to the left and right sides, that is, the feeling of above-mentioned "sieving chaff" occurs.

Replace the damaged inner cage or half shaft.

Possible reasons why the car is shaking at high speed:

1. Tire problems: mainly due to abnormal tire pressure or serious tire wear.

Tire pressure too high or too low: Tire pressure differences between four tires are too large, which can cause the body to shake at high speeds. Examples:

Under normal circumstances, the front tire pressure is usually the same as the rear tire pressure is about the same. If the tire pressure of the right front wheel is and the pressure of the left rear tire is is, due to the difference in air pressure, the tire's ability to absorb energy and absorb shock is inconsistent, and the body shakes at high speeds.

Severe tire wear: Due to wheel alignment or rim deformation, the tire surface is worn inconsistently, resulting in body vibration during driving.

2. The car needs to do dynamic balance or four-wheel alignment, note: dynamic balance and four-wheel alignment are two different.

Dynamic balance: After tire repair, wheel rim deformation, abnormal tire wear, tire piercing big nails or entrainment of large stones, etc., will destroy the tire dynamic balance.

Four-wheel alignment: The wheel alignment data has a large deviation. In particular, the positioning angle of the front wheels is out of alignment, and the toe is too large. In this case, it feels that the vehicle is difficult to control when accelerating, and the shaking is generally not large, but it is awkward.

3. Problems with the engine.

Generally, it is caused by oil or ignition, and the vehicle is under high speed and high load, and the oil and ignition determine the power, and if one of the points is abnormal, it will cause the engine to shake weakly.

To sum up: it is recommended that the owner should go to the 4S shop or auto repair shop in time to let the car repair master test the vehicle and determine where the problem is, so as to repair the symptoms.

1. High-voltage wire breaking refers to the breakage of the high-voltage wire core, which affects the ignition and causes abnormal engine shaking, 2. Check whether the spark plug should be replaced, the electric spark plug has a lifespan, and the ignition efficiency will be significantly reduced after more than three kilometers, which can affect the ignition, which is the most common, at this time only need to replace the spark plug, 3. The air filter is too dirty, the air filter is to protect the engine, not into foreign matter or dust, so that clean air flows into the engine, if the air conditioning filter is blocked, 4. The water temperature of the engine is abnormal, the engine has an optimal homing working temperature, if the water temperature is too high or too low, it will cause the change of the oil-gas mixing ratio, resulting in adhesion and poor lubrication, at this time, it will cause the engine to shake abnormally, 5. The idle speed of the engine is too low, the idle speed of the engine is set by the on-board computer, when the speed of the engine is low to a certain range, the driving computer of the car will automatically adjust, if the idle speed is too low, There will be shaking, attached: judgment of engine shaking: as long as the car shakes when driving, everyone will say that the engine shakes, and subconsciously feel that the problem is very serious, in fact, the engine is inevitably shaking when working, but under normal circumstances, the shake of the car engine should be very stable and regular, if you can clearly feel the recent increase in the car's jitter or has been continuing, then you should pay attention to maintenance.

Idle shaking, the new car has been used for a period of time, and some owners will find that the body has some small shaking, but they don't know that there is a problem. "Body shake" is a sign that something is wrong with the car. Professionals tell us that body shaking may seem like a trivial matter.

The body shakes, considering that it is caused by too much carbon deposit, you can do a throttle cleaning and oil circuit cleaning.

If it's jitter at idle. Check your engine's chicken paw foot pads. Check that your throttle valve has too much carbon in volume, and check if there is any air leakage in the vacuum tube of the whole car?

In your case, it is possible that the engine throttle has too much carbon and needs to be cleaned, so it is recommended that you go to a local professional repair shop to check it.

Generally, if the body shakes badly, it is because the car has serious carbon deposits, so you can consider cleaning the carbon deposits of the engine.

In general, if the body shakes, it is due to spark plug failure, carbon accumulation on the throttle valve, and blockage of the fuel injector.

Body shake may be caused by serious carbon deposits in the engine, or spark plug problems, which need to be checked and repaired in time.

Hello, is the body shaking during driving, pay attention to whether the engine is shaking at idle speed, the normal situation is that the throttle is dirty or the vehicle lacks fire.

Hello, there are still many reasons for this body shaking. It depends on what kind of dithering is in place.

The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector.

Poor idle operation: It may be that the engine is shaking at idle unstable, the idle speed is high and exceeds the specified upper limit, the idle speed is low and less than the specified lower limit, or the idle speed is not soft. These phenomena are related to the failure or poor operation of components such as fuel injectors, oxygen sensors, air flow sensors, and exhaust gas recirculation valves, as well as poor connection of control circuits and vacuum pipelines.

Hello, if the body shakes when idling, it is generally too much carbon deposit in the engine, so try to clean the carbon deposit.

If this is the case for you, it is best to do a dynamic balancing of the wheels first and check whether the chassis connectors are loose and deformed.

This is due to carbon deposits in the engine. It is recommended to check the throttle, fuel injector, spark plug for carbon deposit.

Problems with the ignition system are also one of the reasons for the vehicle shaking, when there is a problem with the spark plug, high-voltage wire or ignition coil in the ignition system, the car will also be shaken when starting, and the owner can judge the cause of the vehicle's idle jitter by checking the spark plug.

3. Unstable oil pressure

When the data of the oil supply pressure of the automobile oil pump is inaccurate, the vehicle will also shake when idling, check the oil pressure, and deal with it in time if it needs to be replaced to avoid causing greater failures.

There are many reasons for car jitter, it can be too much carbon accumulation on the throttle, aging engine floor pads, or it can be a lack of cylinders in the engine. The lack of cylinder is caused by a faulty ignition system. The main components of the ignition system include the ignition coil and the spark plug.

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 deposition inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by a large amount of carbon deposition, resulting in too thin mixture, making it difficult to start.

After the car is hit, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine for combustion, which will make the mixture thicker. 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 to the problem is to clean the carbon deposits at the throttle and fuel 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. Unstable oil pressureIf 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.

Workaround: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.