What should I do if the engine shakes badly?

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 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.

What to do if the engine is shaking at idle.

Hello, from the time of view, your car should be within the warranty period, if there is a problem at this time, the 4S shop should be free to repair, so if there is a problem, it should be repaired as soon as possible

The automobile engine is the device that provides power for the car, is the heart of the car, and determines the power, economy, stability and environmental protection of the car. According to different power**, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrids.

Severe car shaking can be caused by poor oil quality or carbon build-up in engine valves and intake ducts.

1. The volatility of inferior fuel is very poor, especially in winter, when the temperature is low and the cold car starts, the engine block temperature is low, and the fuel is difficult to atomize, resulting in the fuel injected into the cylinder can not be fully mixed with the air, resulting in difficulty in starting and the body shaking badly.

2. Because carbon deposition can absorb an appropriate amount of fuel, the judgment of the electronic control unit is wrong. 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), so even if the remaining 90 parts of mixed oil and gas are fully burned, it will also not achieve the required power, thus causing the car to shake.

Reason 1: The engine lacks cylinders.

Engine cylinder lack mainly refers to the engine has one or more cylinders are not working normally, which is generally manifested as: the exhaust gas flow of the car has obvious intermittent gas, and the exhaust pipe shakes violently, and the engine shake can be clearly felt, sometimes accompanied by a sudden sound. This is mostly related to ignition coil failure.

Reason 2: The machine foot glue is aging or loose.

The foot glue is the rubber block between the engine and the frame. Its function is to reduce the vibration and cushioning of the engine when working, and to have the effect of fixing the engine. Once these feet are aged or loose, the engine shakes dramatically.

The effect will be much weaker after this re-replacement of the foot glue.

Reason 3: Carbon deposition.

When the carbon deposit inside the engine is too much, the ignition energy, intake efficiency, and mixture ratio of the car will be affected, resulting in the unstable power output of the car, and the shaking phenomenon will occur at idle speed and acceleration. This is recommended to go to the 4S shop for the engine cleaning project.

Reason 4: Fuel system failure.

Adding an inappropriate fuel label (e.g., 93 to 90) will result in a decrease in the output of the car and a decrease in power; Or due to the blockage of the vent hole of the fuel tank cap, the fuel tank switch, the fuel filter and the oil pipe between the fuel tank and the carburetor are partially blocked, which cannot meet the required oil volume, resulting in the mixture being too thin and the engine shaking. It is recommended to use the fuel label specified by the manufacturer and maintain it regularly.

1. Problems with the ignition system of the car:

If the ignition system of the car fails, it will cause the car to shake when idling, generally check the spark plug of the car, find that the spark plug is faulty, and replace it in time.

2. Poor quality of automobile fuel:

This is the most common in the daily driving process, poor fuel quality can easily affect the performance of the engine, causing the engine to shake at idle, so when you usually refuel the car, you should go to a regular gas station to add oil with guaranteed quality.

3. Engine carbon deposition

When the engine carbon deposition is more serious, there will naturally be a phenomenon of shaking, and at the same time, there will be a decrease in power, etc., and timely treatment of automobile carbon deposition can solve the corresponding problems.

4. The oil pressure of the car is unstable

The unstable oil pressure of the car will cause the oil supply to be unsmooth, which will lead to the engine shaking, in this case, the oil pressure of the car should be checked in time to ensure that the oil pressure is within the normal working range.

5. The water temperature is abnormal

Abnormal water temperature of the car will change the ignition time of the car and affect the lubrication of the car engine, resulting in the shaking of the car engine.

The engine shakes and idles unsteadily.

There are many reasons for unstable and shaky idling, it may be that the throttle is dirty, it may be that the idle valve is faulty, or it may be caused by the aging of the machine pad.

Engine shake treatment method: check whether the idle motor has carbon deposits, whether the spark plug has too much carbon deposit, and replace the spark plug; Check the oil pressure, clean the oil circuit, and replace parts if necessary.

The lack of cylinder of the engine mainly refers to the fact that the engine has one or more cylinders that are not working normally, which is generally manifested as: the exhaust gas flow of the car has obvious intermittent intermittent flow, and the exhaust pipe shakes badly, and the engine shake can be clearly felt.

If the oil quality is not good, it will also shake, it is best to drive to the repair shop to check what causes the shake.

How does it work without jitter? There are also normal and abnormal jitter.

Analysis of the causes of car shake:

1. Cold start jitter.

First of all, starting from the cold start, the main reason for the cold start body shaking is that the fuel combustion is insufficient, resulting in insufficient power of the car. The ignition energy is low, and when starting, especially when the temperature of the fuel and lubricating oil is low, more oil is required to meet the power. Over time, the pole gap of the spark plug gradually increases, resulting in a decrease in ignition energy and poor fuel atomization, which leads to the shaking of the body.

In addition, the ignition energy can also be reduced due to the aging of the ignition coil, the aging of the high-voltage wire of the spark plug, or the leakage of electricity.

2. 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.

3. 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.

4. 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.

5. 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.

There are several reasons for engine shake:

1. Lack of cylinder: Check the cylinder line to see which cylinder line has no fire, if there is a cylinder that does not work well, the engine will shake due to the lack of cylinder.

2. Carbon deposition: If the car is often idling, the engine will be prone to carbon deposition, and then it is easy to have poor air intake, resulting in engine shaking.

3. Idling: If the car is idling, and if the number of revolutions is low to a certain extent during driving, it will exceed the value set by the computer, which will cause the engine to shake.

Fourth, the engine stabilizer foot: the engine stabilizer foot is the shock absorption system of the engine, the engine stabilizer foot is responsible for absorbing the subtle shake of the engine during operation, if there is a problem with the engine stabilizer foot, these vibrations will be transmitted to the steering wheel, cab, resulting in the engine shaking when idling.

5. Brake disc: If you are accustomed to sudden braking and sudden stopping, it will cause uneven brake disc, which will make the brake disc uneven, and will also cause the engine to shake when braking. What should I do if the engine shakes in my car If your car has the problem of engine shake, then you don't have to panic, first we need to check the engine and open the hood:

1. Observe the operation of the engine, the degree of shaking, and at the same time observe the swing amplitude of the engine tachometer pointer, whether it deviates from the idle expectation, if it deviates from the idle expectation, then the car engine will definitely shake, and the idle expectation needs to be adjusted.

2. Observe whether it is normal idle jitter or load idle jitter (turn on the air conditioner, lights, put in gear, hit the steering wheel, etc.). If it is overloaded, then it is necessary to reduce the load on the car appropriately.

3. Whether there is any abnormality in the external parts of the engine, if there is any abnormality, it needs to be repaired or replaced by a professional maintenance shop.

4. Whether the vacuum tube falls off or is damaged, if these places are damaged, then the car engine will also shake, and it is best to replace it.

5. Whether the wire connector is loose, if the wire is loose, it can also cause the car engine to shake, just plug it in.

6. Whether there is oil leakage, water leakage, air leakage, and electricity leakage, any leakage may cause the shaking of the automobile engine, and the "leakage" should be stopped in time.

7. Whether the exhaust pipe is "abrupt, protruding" (indicating that the combustion is not good), black smoke, raw gasoline smell and other abnormal phenomena, these abnormal phenomena will drive the car engine to shake, so if there is an abnormal phenomenon, it must be repaired in time.

8. Whether the throttle cable is adjusted appropriately, and if the adjustment is not appropriate, it will also cause the car engine to shake, so it is necessary to adjust the throttle cable to the appropriate position.

Seven causes of engine shake.

Seven causes of engine shake.

First, the air filter is dirty

The air filter is designed to protect the engine to reduce wear, generally replaced in about 10,000 kilometers, if the replacement is not timely, there will be insufficient air intake to cause low idle speed, and the engine shakes, as long as the filter element can be replaced.

High-voltage line break: High-voltage line break refers to the high-voltage wire core break, which can affect the ignition and cause the engine to shake.

Seven causes of engine shake.

2. Spark plug life:

The spark plug has a lifespan, and the ignition efficiency is significantly reduced after more than 3-40,000 kilometers, and can affect the ignition, which is the most common failure.

What is the cause of engine shake.

Seven causes of engine shake.

3. Low idle speed:

The engine idle speed value is set in the computer, and when the number of revolutions is low to a certain range, the car computer will automatically adjust it. If the idle speed is too low and the jitter is beyond the control range of the computer, some cars have adjusting screws on the throttle to adjust the idle speed, and some cars can not adjust, this kind of car can check the idle valve, throttle, air flow meter, vacuum sensor, adjust the ignition time (car with distributor), you can increase the idle speed. Low idle speed can occur even when the water temperature is low, so you can check and replace the thermostat.

Seven causes of engine shake.

Fourth, the water temperature is abnormal:

There is a normal range of engine operating temperatures, and high water temperatures will cause earlier ignition times, changes in the oil-air mixing ratio, thinner oil viscosity, and worse lubrication performance. The general fault cause is the jitter caused by the lack of antifreeze, the thermostat cannot be opened, the fan does not rotate, and the temperature of the temperature control switch is inaccurate.

Seven causes of engine shake.

Fifth, the fuel injector is blocked:

The fuel injector of the EFI vehicle is a key component of automobile fuel injection, and the service life is very long, which can reach hundreds of thousands of kilometers. However, because there is gum in the gasoline, the fuel injection hole of the fuel injector will be blocked, so the amount of fuel injected by each fuel injector is inconsistent, resulting in the inconsistent work of each cylinder and causing the engine to shake. The solution is to remove it and clean it.

Seven causes of engine shake.

Sixth, carbon deposits, oil scale blockage:

The throttle, idle valve, and air intake hole will be blocked by carbon deposits, oil scale, and poor air intake after a period of use, which will affect the stable idle speed and shaking. It is necessary to inspect and clean the above parts with cleaning agent, and there is no need to remove them for cleaning.

Seven causes of engine shake.

7. Low cylinder pressure:

The engine has 3 cylinders, 4 cylinders, 5 cylinders, 6 cylinders, and 8 cylinders, and if one cylinder does not work well, there will be a lack of cylinder and the engine shakes. Three-cylinder engines are the most obvious, followed by four-cylinders. Check the cylinder pressure with the cylinder pressure gauge, and solve the fault of low pressure with Xinba.

Xinba has a unique effect on low cylinder pressure and unbalance. It can be added to the engine oil or directly added to the cylinder to restore the balance cylinder pressure.