Is the car shaking slightly when it is idling, and the car is shaking when it is idling

Four reasons why:

1.The engine has serious carbon deposits.

The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector. When the carbon deposit inside the engine is too much, the gasoline sprayed out by the cold start fuel injection head will be absorbed by the carbon deposit 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 the carbon deposit is saturated, it is easy to get on the car, and the gasoline adsorbed on the carbon deposit 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.

In addition, the lower the temperature, the greater the amount of oil required for the cold start, and the more the presence of carbon deposits will affect the smooth cold start. The solution is to clean the oil circuit and check whether the idle motor has carbon deposits that should be cleaned.

2.Problems with the ignition system.

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 is not in good condition and the spark plug is not in good condition. The solution is to check the spark plug for excessive carbon accumulation and replace the spark plug.

3.The oil pressure is unstable.

If you have cleaned the engine charcoal, washed the throttle, changed the oil cushion 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 is wrong and the work is not good, the body shakes will be caused by abnormal oil pump pressure pressure or wrong intake pressure sensor and poor work. The solution is to check the oil pressure and replace the parts if necessary.

4.Aging of engine components.

Car jitter is also associated with aging of the engine feet. The engine foot is actually the suspension system of the engine, and the engine foot is responsible for absorbing the subtle shake of the engine when it is running, and if there is a problem with the engine foot, these vibrations will be transmitted to the steering wheel and cab, causing shaking when idling.

Hello friends, the idle speed of a good car is stable. Slight jitter is allowed due to low external conditions.

Hello, the idle speed is a little shaky to make a cleaning throttle.

There are several reasons for engine shake:

1. The engine has serious carbon deposits, and the most common car with serious shake is that the fuel injector throttle valve is too dirty or too much carbon;

2. Ignition system problems, check the working conditions of spark plugs, high-voltage wires and ignition coils;

3. The oil pressure is unstable, if the first pressure of the pump is abnormal or the error and poor work of the inlet pressure sensor will cause the body to shake;

4. Aging of engine parts; Excessive carbon deposits in engine emissions absorb carbon from the gasoline of the cold-start injector, which leads to a dilute cold-start mixture and difficulty starting.

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

1.Serious engine carbon deposits: Cars always have the problem of carbon deposits, including cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc.

When the engine has too much carbon deposit, it will affect the ignition energy, air intake efficiency and air-fuel ratio of the car, resulting in the unstable power output of the car, and the phenomenon of idle speed and acceleration jitter appears.

2.Unstable oil pressure: If you have cleaned the engine carbon deposits, cleaned the throttle, replaced the oil gasket and spark plug, etc.

And when idling, you still find that the body shakes, it is recommended that you go to the 4S shop to check whether the oil 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, it will cause the body to shake.

3.Engine cylinder shortage: Engine cylinder deficiency mainly refers to the engine one or more cylinders are not working properly, which is generally manifested as:

The exhaust fumes coming out of the car are obviously intermittent, and the exhaust pipe shakes violently, and the engine shake can be clearly felt, sometimes accompanied by abnormal noises. This is mostly related to ignition coil failure.

4.Aging of engine parts: Shake in the car is also associated with the aging of the engine feet (also known as claw pads).

The engine foot is actually the shock absorber system of the engine. The engine feet are responsible for absorbing slight vibrations when the engine is running. If there is a problem with the engine base, these vibrations can be transmitted to the steering wheel and cab, causing vibrations at idle.

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.

The specific causes and solutions of unstable idling after the car starts:

1.Intake manifold leakage: When the air, gasoline vapor and combustion exhaust gases that should not enter the intake manifold, the mixture is too thick or too thin, resulting in unstable idling of the car.

Solution: Check the manifold and replace it in time if there is any air leakage.

2.Excessive carbon deposition on the throttle: excessive carbon deposition on the throttle and surrounding air intakes, and changes in the cross-sectional area of the airway, which makes the control unit (check the transaction price|Matching|preferential policies) cannot accurately control the idle air intake, which also causes the mixture to be too thick or too thin, resulting in unstable car idling.

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.

The causes of car idle jitter are:

1.The ignition system of the vehicle is out of order;

Solution: Check the working condition of the spark plug, high-voltage wire, and ignition coil to see if the spark plug has too much carbon. Once found, clean the remaining parts or replace the spark plugs immediately;

2.loose parts in the ignition system;

Workaround: Check the parts in the ignition system. If there is any looseness, it is recommended to go to a professional 4S shop for repair.

3.The engine has serious carbon deposits;

Solution: Pour the engine carbon cleaner directly into the engine from the oil port, and then idle for 10-15 minutes. It is then drained with the old oil, and after cleaning the inside, it is replaced with new oil.

4.aging of engine components;

Solution: Check the aging of engine parts, and the erector is recommended to go to a professional 4S shop for repair and replacement.

5.There is more carbon deposition on the throttle;

Solution: The most common way to clean the carbon deposits on the throttle is to disassemble the throttle, then use a carburetor to clean the front and back of the throttle, and then wipe off the decomposed carbon deposits with a cotton cloth.

6.The air filter is not replaced in time;

Solution: Replace the air cleaner in time.

7.Excessive carbon deposition in the injector;

Solution: Remove the nozzle and clean it once.

8.The oil pressure is unstable.

Solution: It is recommended to go to a professional repair shop or 4S shop to check the repair.

The idling speed of a car is not the speed, but the working condition. When the engine is running at idle speed, it is called idling. When the engine is running, the accelerator pedal is completely relaxed, and then the engine is at idle. The idle speed of the engine is called idle speed, and the idle speed can be adjusted by adjusting the size of the shock absorber.

Analysis of the causes of the shaking of the gasoline version of the car:

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 driving a certain number of kilometers in the car, the throttle valve will be too dirty to cause the throttle to close loosely or the idle motor to 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 vehicle, the engine will shake more than normal, and even sometimes there will be a small appearance 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 these are all gone, you still find that the body is shaking, it is recommended that you go to the repair shop to check whether the fuel supply pressure and the intake pressure sensor are normal, if the oil pump supply pressure is abnormal, the intake pressure sensor is wrong and improper work will cause the body to shake.

The reasons for the shaking of the vehicle in the case of idling are: 1. The ignition system of the vehicle is faulty; 2. The parts in the ignition system are loose; 3. The engine has serious carbon deposits; 4. Aging of engine parts; 5. There is more carbon deposition on the throttle; 6. The air filter is not replaced in time; 7. There is too much carbon deposition culture in the fuel injector; 8. There is a problem with the ignition system; 9. The oil pressure is unstable. The idle speed of the car is not a silver speed, it refers to a working condition, when the engine is idling, it is called idling, when the engine is running, completely relax the accelerator pedal, then the engine is in an idle state, the speed of the idle speed of the closed manual machine is called idle speed, and the idle speed can be adjusted by adjusting the size of the damper.