What is the cause of car shaking, what is the cause of car shaking

1.The most common cause of car shake caused by serious carbon deposits in the engine is that the throttle valve is too dirty or the fuel injector is too much carbon. 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 the oil pressure is unstable, if you have cleaned the engine carbon deposit, 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 shakes will be caused.

Solution: Check the oil pressure and replace the parts if necessary.

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.

1. The engine produces serious carbon deposits

Carbon deposition in the engine is the main cause of car shaking, when there is too much carbon deposition inside the engine, the gasoline sprayed by the cold start injector will be absorbed by the carbon deposit, resulting in a dilute mixture for the cold start, which will make it more difficult to start the cold start.

2. Hydraulic problem:

If the fuel supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is abnormal, or if the intake pressure sensor is wrong and the operation is not good, the body will shake.

3. Ignition system failure:

Spark plugs are wearing parts, which need to be replaced regularly, if it is found that the spark plug has too much carbon or the ignition gap is too large, it needs to be replaced, and it is also necessary to check the working state of the high-voltage wire and ignition coil, and the car computer can be used to determine the state of the ignition system.

There are many reasons for car shaking, and the problem of the wheels is the main one!!

Has the car been pitted or anything lately that has caused the tires to go out of circle? Inconsistent tire patterns? What is the difference in air pressure? These are the main problems!!

If the questions are not in these, you add the questions!! I'll continue to help you out.

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.

Professionals tell us that body shake seems to be a trivial matter, but if you don't pay attention to detection, it will cause a big failure. So, what is the problem that causes the body to shake? How should ordinary car owners judge and solve?

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. Therefore, when the electrical system is turned on, especially when the orange is rotten, 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 and the throttle will not close tightly or the idle motor will be stuck, resulting in the engine idle speed is too high, and the carbon deposits generated by the engine in the process will also cause the vehicle to shake, especially when starting the car, 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 Yuanwei 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.

1.Causes of engine shake:

2.Engine carbon deposits: The most common cause of car shake is a dirty throttle or too much carbon buildup in the injectors.

3.Solution: Clean the oil circuit and check whether there is carbon deposit in the idle motor. It should be washed.

4.Ignition System Issues: Check the working condition of the spark plugs, high-voltage wires, and ignition coils. If the ignition system is working, the spark plug will jump away, which can also cause such failures.

5.Solution: Check the spark plug for excessive carbon deposition and replace the spark plug.

6.Oil pressure: If the engine has been cleaned, the throttle has been cleaned, the oil pad and spark plug have been replaced, and the body shakes at idle, it is recommended that you go to the shop to check whether the oil supply pressure and intake pressure sensors are normal.

7.Solution: Check the oil pressure and replace the parts if necessary.

8.Aging of engine parts: car shake is also related to the aging of the legs.

The feet of the engine are actually the anti-vibration system of the engine, which is responsible for suction and removal of the slight vibration of the engine when it is running. If there is a problem with the engine feet, these vibrations can be transmitted to the steering wheel and cab, causing vibrations at idle.

9.Workaround: Replace the part.

The causes of car shaking are as follows:

1. Serious carbon deposition in the engine

The most common cause of car shake is that the throttle valve is too dirty, and the fuel injector has too much carbon deposit, and if there is too much carbon accumulation inside the engine, the gasoline sprayed from the cold start injection head will be absorbed by the carbon accumulation, and the cold start mixture becomes too thin and the start becomes difficult.

In such a situation, it is easy to get on the car in front of the socks saturated by the gasoline absorbed by the carbon accumulation part, and after getting on the car, the gasoline adsorbed in the carbon storage part is sucked into the cylinder under the vacuum attraction of the engine and burns, and the mixture becomes thicker, and when the combustible mixture of the engine becomes thicker, it is necessary to shake after cold starting, and it is necessary to clean the oil circuit and check whether the idle motor has carbon deposits.

2. Ignition system problems:

Please check the working condition of the spark plug, high-voltage lead and ignition coil, poor ignition system work and poor condition of the spark plug flying fire will also cause this fault phenomenon, you need to check whether the spark plug has too much carbon deposit, replace the spark plug.

3. Unstable oil pressure

Even if the accumulation of engine carbon, the cleaning of the throttle, the replacement of the oil pad, the spark plug, etc., are cleaned, if the body is found to be shaking when idling, it is recommended to check whether the fuel supply pressure and intake pressure sensor are normal at the 4S shop, and if the oil supply pressure of the oil pump is abnormal, or if the value of the intake pressure sensor is wrong and the poor operation becomes the cause of the body shaking, it is necessary to check the oil pressure and replace the parts if necessary.

4. Deterioration of engine parts

The shaking of the car is also related to the aging of the engine, in fact, it is the shock-absorbing system of the engine, which bears the role of absorbing the subtle shaking of the engine when it is running, if there is a problem with the engine, these vibrations will be transmitted to the steering wheel and cab, and the shaking will occur when idling, and the parts of the engine need to be replaced.

5. Lack of power:

The power of the car is insufficient, the ignition energy is low, and the fuel is low at the temperature of the lubricating oil at the start, in order to meet the power needs to blow a lot of oil, and the polar gap of the spark plug gradually increases after a long time, resulting in a decrease in ignition energy, poor fuel atomization, and the need to increase fuel.

6. Deterioration of ignition coil:

If the spark plug high-voltage wire deteriorates or leaks, and the ignition energy of the lead wire decreases, the ignition coil needs to be replaced.

The reason for the shaking of the car is: the fuel combustion is not sufficient, resulting in insufficient power of the car, low ignition energy, especially when the temperature of the fuel and lubricating oil is low, more fuel is needed to meet the power.

After a long time, the pole gap of the spark plug gradually increases, resulting in a decrease in ignition energy and poor fuel atomization, resulting in a shake of the body.

Ignition energy can also be reduced due to aging of the ignition coil, aging of the high-voltage line of the spark plug, or leakage.

There are many reasons for cold start and hot start car jitter, in addition to insufficient fuel combustion, it may also be due to abnormal engine water temperature, low cylinder pressure, blocked fuel injectors, etc. If the car starts shaking, it is recommended that the owner go to the 4S shop for maintenance in time.

Let me tell you, the electronic fan is activated! Normal phenomenon, if the shaking is violent, go to the 4S detection to replace the electronic fan for free, and the answer is complete.