The engine is shaking, what is the cause of it.

Possible causes of engine shake are:

Blocked air cleaner causes idle speed to be too low.

A cylinder does not work or works poorly.

The oil pump is not in good condition, and the oil pressure is unstable.

Carbon deposits in the combustion chamber.

Carbon accumulation in the grease nozzle and uneven fuel injection.

The cylinder is worn, and there is air leakage.

The valve is not closed tightly.

The idle speed is low. The high-voltage line is broken.

The water temperature is abnormal, and the feedback of the temperature control switch is not accurate.

Occasionally, if the cylinder is missing, the fault light will not be lit.

In the event of a recurrent fault, the engine EPC light will give an alarm.

This is not necessarily, it may be a problem inside the cylinder work, I personally recommend going to a 4S shop or a place where the engine is professionally repaired and maintained.

What causes the engine to shake.

1. Idle shivering.

1) The oil pressure is too low or too high.

The performance is slight traveling, too low the situation has weak acceleration, easy to stall, difficult to come to the car, serious acceleration tempering, too high for shaking, strong exhaust, generally no gun.

2) The grease nozzle is slightly blocked.

Traveling, idle shaking, poor acceleration, serious cylinder drop phenomenon (3) gasoline quality.

Most of them are acceleration or medium and high-speed impulse, and if it causes oxygen sensing poisoning, there is a traveling phenomenon (4) spark plug.

Common faults, idle jitter, poor acceleration, everyone will judge (5) cylinder line.

Similar to a spark plug.

6) Ignition coil.

Similar to a spark plug, but with obvious poor acceleration, hair rush, etc.

7) String power. Tempering, firing, poor acceleration.

8) Distributors.

Serious idle jitter, occasional channeling.

9) Air flow or air compressor.

Traveling, poor acceleration, or no idle at all, normal rapid acceleration, no slow acceleration (depending on the model of the performance phenomenon is different).

10) Throttle.

The most difficult one to judge, all phenomena are there, and the most fucking fire is that sometimes there is no fault code (11) and there is a gas leak.

Traveling car, idle shaking, slow addition is abnormal, there is a jitter phenomenon, the detection method is known to everyone (12) exhaust gas circulation (valve).

Idle jitter, if the learning value is cleared, there is occasionally a situation that the car can not come, and there are models that are manifested as a traveling car (13) activated carbon tube.

Swimming, shivering at idle.

14) Water temperature.

It is difficult to come to the car or cannot come to the car, the traveling car, the cold car is easy to stall, and the hot car is difficult to start (15) oxygen sensing.

Everything has to do with this thing.

16) Curve position.

Occasional shaking, easy to stall, difficult to come to the car or unable to come to the car.

17) Convexity.

Occasional shaking, incoming cars are incoherent, depending on the model.

18) Idle valve.

Swimming, shaking, anyway, the first thing everyone did was it, there is nothing to say (19) detonation sensing.

I've come across a jitter that it causes while the acceleration is bad, you've ever encountered no (20) ECU

Hehe, I don't need to talk about this.

21) Valve deposition.

Occasional shaking or traveling, cold car is difficult to start.

22) Valve leakage.

Drop the cylinder, poor acceleration.

23) Uneven cylinder pressure.

Traveling car, accelerating jitter.

24) The valve spring is too weak or broken.

Drop the cylinder, poor acceleration.

25) Ignition timing.

Idling shake or loaming.

26) Poor exhaust.

Traveling car, can not run at high speed, idle shaking.

2. Shake it sharply.

Generally, it is a cylinder drop or poor ignition, and then there is 3 slow shaking such as throttle and air leakage.

Air leaks, throttles, and clogged throttles are common.

4. Medium and low speed jitter.

Similar to slow jitter.

5. Medium and high speed jitter.

Check the ignition system directly.

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.

Look at the engine shaking and unstable after you get into the car, you step on the accelerator and find that it is still the case, it means that one or two cylinders of your engine are not working. Check the cylinder line for falling off and check the spark plug. This is a common problem, and there are several reasons why it can be true.

1.The air filter is dirty, clogged, and not replaced in a timely manner, or the high-voltage line is open and affects ignition and causes engine shake.

2.Engine shake caused by spark plugs not being replaced in time or low fuel pressure.

3.Dirty throttle valves, clogged injectors, or low cylinder pressure can cause engine jolting.

There are many causes of engine shake, and it is necessary to understand the specific conditions that occur at that time to make a judgment. If the engine shakes just after the cold car is on in the morning and is normal after the hot car, the cause of the fault may be caused by too much carbon deposition and dirty throttle.

Many reasons, water temperature, carbon deposit, spark plugs, and low idle speed can be caused! The Foton car has been shaking for a long time!

The phenomenon of engine shaking will involve many reasons, such as excessive carbon deposition in the intake system such as throttle and idle valve, poor fuel injection atomization of the fuel injection nozzle, and poor working performance of the ignition system, which is mainly directly related to the working performance of the spark plug, high-voltage line and ignition coil

1. The lack of cylinders in the engine, the lack of cylinders in 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 discharged by the car has obvious intermittent intermittentness, and the exhaust pipe shakes violently, and the shaking of the engine can be clearly felt, sometimes accompanied by a sudden sound. This is mostly related to ignition coil failure.

2. Carbon deposition problems include cylinder carbon deposition, throttle carbon deposition, spark plug carbon deposition, intake carbon deposition, etc., these positions are just closely related to the power output of the engine, when the carbon deposition inside the engine is excessive, the ignition energy of the car is reduced, and the air intake efficiency decreases, which eventually leads to the engine shaking, acceleration weakness symptoms;

3. Fuel system failure, adding inappropriate fuel labels (for example, No. 93 to No. 90), resulting in a decrease in the output power 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.

4. Air intake system failure, air is one of the power of the engine, if the air filter is not cleaned in time for a long time, the lack of air volume will cause the combustible mixture to be too thick, so that the engine power decreases; If it is a vehicle with a turbocharger, the failure of the supercharger will also cause the engine to shake during acceleration;

5. Cold start, when the car starts cold, the engine lubrication effect is relatively poor, the oil fluidity is poor, and it is also relatively viscous, so there will be abnormal sound of mechanical wear, as well as cold start, the coolant temperature is relatively low, the mixture is relatively thick, and insufficient combustion will cause the engine to shake and, this is generally a normal phenomenon, and it will get better after the hot car.

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, replace the spark plug 3If 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.

Causes of engine shake:

1.The engine has a lot of carbon deposits.

2.Problems with the ignition system.

3.Aging of engine components.

4.The oil pressure is unstable. Generally, the symptoms of engine shake are: shaking at idle speed and weak acceleration.

Here's how to fix engine shake:

1.The most common cause of car shake caused by severe carbon deposits in the engine is a dirty throttle valve or excessive carbon deposit in the fuel injector. In this case, the oil circuit should be cleaned, and the idle motor should be checked for carbon deposits.

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. At this time, the spark plug should be checked for excessive carbon accumulation and replaced.

3.The aging of engine parts and the shaking of automobile engines are also related to the aging of engine feet (also known as claw pads). In this case, the parts should be replaced.

4.If the oil pressure is unstable, the oil pressure should be checked and the parts should be replaced if necessary.

The reasons for the engine idle shake are: 1. Carbon deposition on the throttle; 2. The spark plug jumps weakly; 3. The engine lacks cylinders; 4. The rubber parts of the engine support and the gearbox bracket that play a buffering role are ruptured; 5. The clamp of the intake main pipe is loose or the hose is broken; 6. Air leakage from the intake manifold gasket; 7. The vacuum tube connected to the intake manifold is broken and leaking, 8. The valve is not closed tightly, etc.

The seven main reasons for engine shake are as follows: 1. Dirty air filter: The air filter is designed to protect the engine and reduce wear, and it is replaced in about 10,000 kilometers.

High-voltage line break, high-voltage line break refers to the high-voltage wire core break, which can affect ignition and cause engine shaking. 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 fault to replace all the spark plugs.

3. Low idle speed: The engine idle speed value has been 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, there are adjusting screws on the throttle to adjust the idle speed, otherwise it can not be adjusted, this 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. 4. Abnormal water temperature: The engine operating temperature has a normal range, and the ignition time will become early, the oil-gas mixing ratio will change, the oil viscosity will become thinner, and the lubrication performance will deteriorate when the water temperature is high.

The cause of the fault is the lack of antifreeze, the thermostat cannot be opened, the fan does not rotate, and the temperature of the temperature control switch is inaccurate and causes jitter. 5. Fuel injector is blocked: The fuel injector of the electric injection vehicle is a key component of automobile fuel injection, and its service life is very long, which can reach hundreds of thousands of kilometers.

However, due to the presence of 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. Remove it and wash it. 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. 7. Low cylinder pressure:

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