The body shakes when it just ignites, and what is the cause of the body shake when it just ignites

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 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.

Hello, it's normal for the car to shake when it's fired.

Reason 1: When the car starts, that is, when you call ignition, the engine is driven by the starter to run the engine, and the car has obvious abnormal noise. And the speed of the engine is often relatively low, but at this time, the control of the engine is out of open-loop control, that is, the amount of fuel injected into the engine cylinder by the injector is often more than that of the car during driving, and the energy generated by the engine is more, and the power is greater.

Therefore, when starting the engine, due to the low speed, the force generated during the operation of the engine will be very large, and this force will hit the cylinder of the engine, resulting in significant shaking.

Reason 2: We often talk about resonance characteristics. When the frequency of an object's vibration is equal to its natural frequency, the amplitude of the vibration is amplified, which is called resonance.

During start-up, the engine runs at a frequency similar to its natural frequency, so you'll notice a noticeable shake than usual.

Reason 3: The influence of ambient temperature. Starting a car in winter is more difficult than starting a car in summer, and the time it takes for the engine to reach the right operating temperature is correspondingly longer, but the control system needs to shorten this time, so the jitter is also noticeable.

Hope it helps, hope.

If you notice significant body shaking, it may mean that the vehicle has one of the following three conditions:

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.

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.

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.

2. The aging of engine parts and the shaking of the car are also related to the aging of the engine feet.

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

This is normal, the starter of the car has a force acting on the engine, which will cause the engine to shake.

At the beginning of the year, the body shook and vibrate. Only if the shaking and vibration are not severe, but slight, and the shaking and vibration are regular and stable, it is normal.

As long as it is a gasoline engine, all parts of the engine start to run when ignition, which will naturally produce tremor and vibration, which will affect the slight tremor and vibration of the car, which is unavoidable.

Pure electric vehicles don't tremble. This is a normal physical phenomenon.

Especially in winter, the shaking will be more noticeable. Most of the cars will get better when they get hot. The specific principle, due to space limitations, will not be patiently introduced here. Interested friends can go to the Internet to check the information by themselves.

1.The gaskets of the engine are aging. 2.

There is a problem with the fuel system. For example, the fuel injector is blocked, resulting in abnormal fuel injection. 3.

There is a problem with the air intake system. For example, the throttle is dirty. 4.

There is a problem with the ignition system. For example, carbon deposits in the spark plug or the gap is too large.

The specific cause needs to be detected by professionals to determine the problem. Only by determining what the problem is, can you **.

The most common cause of body shake during ignition is that the throttle is too dirty or the injector has too much carbon. When there is too much carbon deposition inside the engine, the gasoline sprayed by the cold start fuel injector will be absorbed by a large amount of carbon deposits, resulting in a thin mixture during cold start, which makes the body shake and make it difficult to start the vehicle when it is just started.

In this case, it is easy to drive only when the gasoline absorbed by carbon deposits is saturated. After driving, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine for combustion, so that the mixture becomes thicker, and the combustible mixture of the engine is sometimes dilute and sometimes 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 will be deposited, which will affect the success of the cold start.

It is recommended to clean the oil circuit, check whether there is carbon deposit in the idle motor and clean it.

Also, check the operation of the spark plugs, high-voltage wires, and ignition coils. If the ignition system is working poorly, poor ignition of the spark plug can also lead to such failures. The solution is to check the spark plug for excessive carbon deposits and replace the spark plug.

If the engine carbon deposits have been cleaned, the throttle valve has been cleaned, the oil pads and spark plugs have been replaced, etc. If the oil pump supply pressure is abnormal, or the value of the intake pressure sensor is wrong and working poorly, it will cause the body to shake. Also check the oil pressure and replace parts if necessary.