What is the reason for the high engine movement?

There is a key to engine longevity.

Pay attention to the run-in use.

This is the basis for extending the life of the engine. Whether it is a new engine or an overhauled engine, it must be run-in according to the specifications before it can be put into normal operation.

Check the fastening area frequently.

Diesel engine or gasoline engine is affected by vibration impact and uneven load during use, bolts and nuts are easy to loosen, and the adjustment bolts of each part should be carefully checked to avoid damage to the parts due to loosening. Valve clearance, valve phase, fuel supply advance angle, fuel injection pressure and ignition timing should be checked and adjusted in time to ensure that the engine is always in good technical condition, so as to save fuel and prolong service life.

Keep the oil and water clean and the body clean.

If the fuel is not pure, it will cause the precision fitting parts to wear out, and the fitting gap will increase, resulting in oil leakage, oil dripping, power supply pressure reduction, gap increase, and even serious failures such as oil circuit blockage and shaft burning tile; If there is a lot of dust in the air, it will accelerate the wear of cylinder liners, pistons and piston rings; If the cooling water is not pure, the scale of the cooling system will increase, hinder the heat dissipation of the engine, the lubrication conditions will deteriorate, and the parts will be seriously worn; If the appearance of the body is not clean, the body will be corroded and the service life will be shortened.

Ensure that there is enough oil, water and air.

If the gasoline and air are not timely or interrupted, there will be difficulties in starting, poor combustion, power decline, and the engine cannot run normally; If the engine oil is insufficient or interrupted, the engine will be poorly lubricated, the parts will be seriously worn, and even the phenomenon of tile burning will occur; If the cooling water is insufficient, the temperature of the machine will be too high, the power will decrease, the wear will be aggravated, and the service life will be reduced.

There are also regular oil changes! Check your tire pressure! Conditionally do a 4-wheel positioning on a regular basis! Clean the grease nipple and air filter regularly!

In addition to a very small number of important electrical connectors on the car using gold contacts, most of the rest of the joints are made of copper-zinc alloy, under normal circumstances, its reliability is guaranteed, but if the car runs in a high-temperature, high-humidity, bumpy environment for a long time, these joints may produce loose, rust, poor contact and other faults, and some strange electrical faults are mostly caused by this. Therefore, during routine maintenance, it is important to check the joints of the computer, sensor, fuel injector and other components on the car.

What causes high engine noise? Learn this, the engine sounds the same as a new car.

The main reasons for the vibration of this machine are as follows: 1. The ignition angle is too early, and the ignition is too early, which will make the piston still in the compression stroke, and most of the oil and gas have been burned, at this time, the unburned oil and gas will withstand great pressure and spontaneously combustion, and cause engine vibration; 2. The engine has too much carbon deposit, and the engine will produce high temperature hot spots on the surface of the carbon deposit, which will cause the engine to vibrate violently; 3. If the engine temperature is too high, the engine temperature will also cause engine vibration.

There are several reasons for the large engine shaking: 1. The engine has serious carbon deposits, and the most common reason for the car shake is that the throttle valve is too dirty or the fuel injector has too much carbon deposit, and when the carbon deposit inside the engine is too much, the gasoline sprayed by the cold start fuel injection head will be absorbed by a large amount of carbon deposit; 2. The mixture that leads to cold start is too thin, which makes it difficult to start, and under this prudent condition, only when the gasoline absorbed by carbon deposition is saturated, it is easy to get started, and the gasoline adsorbed on the carbon deposition after landing will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture becomes thicker; 3. The combustible mixture of the engine is dilute and thick, and the infiltration causes idle shaking after cold start, the lower the temperature, the greater the amount of oil required for cold start, and the more carbon deposition will affect the smooth or not of cold start.

It is normal to have a higher idle speed in the morning (depending on the outside temperature and oil viscosity) and be a little louder. If the noise is too loud and disappears after the hot car, it is most likely that the oil viscosity is too high or the oil pump is not working properly, and the upper oil channel is blocked by oil scale, resulting in the valve chamber is not fully lubricated and the wear of the valve mechanism increases. After the car is warmed up, the oil flow improves, the pressure rises and the noise decreases.

Another possibility is that the lubrication system is normal, but the pitch door is sticking due to long-term fouling, and the idle speed is too high. Basically, the relationship with the generator can be ruled out.

It may be that there are loose screws, you need to check it out! Or maybe your engine can be serviced!

The engine needs to be serviced!

The aging or loosening of 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 loosened, the engine will shake, and the faster the speed, the louder the shaking will be.

On the one hand, if our oil viscosity does not match the engine, it will be easy to produce carbon deposits, resulting in louder engine noise. On the other hand, if the viscosity of the oil is too low, it will cause insufficient lubrication and wear of engine parts to produce abnormal noise; If the oil is too viscous, the engine will be overloaded and will also produce noise.

Inside**, the vibration is certain, and the larger the displacement, the more powerful it is.

There are four possible conditions for a vehicle: 1The 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. Workaround:

Clean the oil circuit and check whether there is carbon deposits in the idle motor that need to 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. Workaround:

Check the oil pressure and replace parts if necessary. 4. The aging of engine parts, the shaking of automobiles is also related to the aging of engine feet (also known as claw pads). 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.

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.

The main reason is that the engine shakes due to abnormal combustion, and the reason for the abnormal combustion is usually: Sun Bureau.

1. The ignition is abnormal, for example, the spark will damage the hole plug, the ignition module will fail, etc.;

2. Intake and exhaust problems, mainly caused by valve ablation;