What is the cause of the lack of engine power and the decrease in power?

The main factors of insufficient power are as follows:

1) Reasons for fuel supply: due to the blockage of the vent hole of the fuel tank cover, the fuel tank switch, the fuel filter and the oil pipe between the fuel tank and the carburetor, which cannot meet the required oil volume, resulting in the mixture being too thin and the engine working weak.

Due to the long-term use of the air filter is not cleaned in time, the blockage, the lack of air volume will cause the combustible mixture to be too thick, so that the engine power will be reduced.

The use of low-octane gasoline, the use of gasoline for too long, due to volatile deterioration resulting in too low octane number, easy to cause detonation, so that the engine power decreases.

Carbon accumulation in spark plugs and other parts increases fuel consumption.

There is water and air in the oil circuit, which will affect the smooth flow of fuel.

The muffler has too much carbon, which increases the exhaust resistance.

2) Causes of ignition system: ignition timing is inaccurate, ignition is too early, causing premature ignition and detonation of combustible mixture.

Due to the failure of the ignition system, the spark plug is broken or the spark plug spark is weak.

3) Compression pressure of the cylinder: the serious wear of the piston, piston ring and cylinder causes the matching gap of the piston, piston ring and cylinder to increase, and the sealing becomes poor, resulting in the leakage of the cylinder head and reducing the compression pressure of the cylinder.

Due to the poor sealing, the crankcase leaks, which reduces the suction power.

Improper adjustment of valve clearance, misalignment of valve timing, and tight valve closure affect the cylinder pressure and reduce the power of the engine.

4) Engine overheating: due to various reasons, the combustion of the combustible mixture is incomplete, so that the carbon deposit in the combustion chamber is excessive, resulting in poor heat dissipation, and the engine load increases to produce overheating.

5) Too much or too little lubricating oil in the crankcase, the lubricating oil deteriorates or is dirty, and the lubricating oil passage is blocked, which affects the power of the engine.

The insufficient engine power of the vehicle is also often referred to as insufficient engine power, the car is not energetic, it can't run, the speed can't go up, and the torque is limited.

The main reasons for the lack of power and power of the vehicle engine and the feeling of weakness are:

1. The oil supply of the low-pressure oil circuit is insufficient, and some of the oil circuits are blocked;

2. There is air or water in the diesel;

3. The air filter, air intake pipe or intercooler is blocked, and the air intake resistance increases;

4. Failure of cylinder, valve, high-pressure oil pump plunger and so on;

5. The exhaust brake butterfly valve is faulty, blocking the exhaust pipe and the exhaust is not smooth;

6. Caused by the failure of the engine sensor or after-treatment of the vehicle with the national four and five emission standards.

Solution: Please drive the vehicle slowly to the service station for maintenance, and be sure to observe the changes in the dashboard indicator and engine at any time during driving.

If the car is added to the gasoline of poor quality, there are too many impurities in the gasoline composition, which can easily cause the production of carbon deposits, and seriously affect the blockage of the oil circuit, thus causing the power to decline due to the poor oil supply. It is best to check whether the car filter is too dirty at about 60,000 kilometers, so as not to cause oil blockage.

2.Poor tire pressure of the car: When the tire is inflated, it must be filled enough, and it should be filled according to the tire pressure gauge marked on the body.

3.Excessive carbon deposits and nozzle losses: Excessive carbon deposits in valves and intake ducts are the most common causes of loss of vehicle power.

4.The throttle is too dirty: If the opening angle of the throttle does not reach this standard value, it will affect the abnormal amount of fuel injection, resulting in a decrease in power or unstable power.

Ask a question about the car for a year and a half.

The car is a consumable, and the age of the person is the same, with a year of "old" a year, therefore, after a few years of use of the car, some parts will be worn, and the engine power is not as good as before, what is going on?

However, as the title says, the car is used for 5 years, according to the normal frequency of use (20,000 kilometers a year), the car is not very "old", if the engine is weak, there may be the following reasons. On the one hand, the reason may be the quality of the oil, for example, some people may go to a bad gas station and add inferior oil, and the poor quality oil will increase the carbon deposit of the engine, which will lead to a decrease in engine power and an increase in fuel consumption.

If it is not a carbon deposit, you can also consider whether it is a spark plug problem, which is the heart of the engine, and its role is to use high-voltage electricity to generate sparks to ignite the gas mixture. If there is a problem with the spark plug or it is used for too long, the ignition ability will also decrease, resulting in insufficient combustion of the mixed gas in the cylinder, which will slow down the acceleration of the vehicle and increase fuel consumption. Therefore, regular replacement of the spark plugs can also help to increase the power.

There are also some faults may be in the battery, the battery will appear to lose power in the working year, the voltage is insufficient when starting, the motor will be very difficult when driving the engine, and the ignition effect of the spark plug will be worse at the same time, and the mixture combustion is not complete, resulting in the power decline. Don't think that the battery can continue to be used if it is not broken, it is essential to check and replace the battery regularly.

If it is not a problem inside the engine, it may also be a problem with the external parts of the vehicle, the most important thing may be the tire, especially when the tire pressure is too low, the contact area between the tire and the ground increases, and the corresponding friction of the car will also increase, which naturally appears to be insufficient power, and fuel consumption will also increase.

1. The sensor is damaged, the contact is poor, or the signal is interrupted; 2. Poor engine maintenance; 3. The quality of fuel and oil is not good; 4. The combustion of the mixture is insufficient; 5. Spark plug failure, ignition coil failure; 6. The fuel pump is faulty and the oil circuit is blocked; 7. The air conditioner filter is blocked. The specific situation is analyzed as follows; 1. Sensor problems; The sensors mentioned here include water temperature, crankshaft position, air flow, intake air temperature, oxygen sensor, etc., when these sensors are damaged, poor contact or signal interruption, the ECU of the car can not accurately obtain the engine data, at this time it will cause the engine fault light to turn on. 2. Maintenance problems; Poor engine maintenance is the most common cause of engine failure to light up.

We know that the vehicle has a certain maintenance cycle, if the owner does not maintain on time, coupled with bad driving habits, then it will increase the burden of engine operation, and finally can only remind you through the fault light to care about your car 3, oil quality problems; The oil quality here includes fuel and engine oil, we know that the fuel filled by the car is generally marked, and the engine oil is also semi-synthetic and fully synthetic, the manufacturer will generally recommend the owner to use which grade of fuel, which type of engine oil, if the owner does not add as required, it will cause wear and tear of the engine in the long run, and the fault light is not to blame. Poor combustion of the mixture; The failure of the spark plug, ignition coil, fuel pump, and oil circuit blockage of the engine will cause poor combustion of the engine mixture. Poor combustion of the mixture is caused by the problem of engine carbon deposition or knocking, and these will eventually be detected by the engine's oxygen sensor and reported to the ECU, which will naturally turn on the fault light to warn of the intake air intake problem; When the engine burns, it needs to take intake, the air filter element is very important in this process, if the air filter element of the car is not clean, it will affect the air intake of the car if it is not cleaned regularly, and it will be blocked for a long time, and if it is serious, it will cause the engine failure light to turn on.

pressurization issues; Intake booster lines and turbochargers can also cause engine failure lights to illuminate. The most common of these is turbocharger damage, and at the same time, the vehicle will also have oil leakage, large oil consumption, and power loss.

The common reasons for the decline of engine power are: too much carbon deposition in the engine, resulting in insufficient air intake; The fuel supply system is not smooth, etc.

Excessive carbon build-up in the engine: Excessive carbon build-up in the valves and intake ducts is the most common cause of a car's power loss. The solution is to find a professional auto mechanic to help clean up the carbon deposits and check if the nozzle needs to be replaced.

Fuel supply system is not smooth: check the fuel supply system, whether there is blockage or gas resistance in the fuel pipeline, whether the gasoline pump is working normally, whether the oil level height of the carburetor float chamber meets the specified requirements, whether the air filter is blocked, whether the exhaust system is blocked, etc.

Poor tire pressure is also one of the reasons for the decline of car power, especially when the tire pressure is insufficient and the number of people is large. Therefore, when the tire is inflated, it must be filled enough, and it should be filled according to the tire pressure gauge marked on the body.

1. The oil and circuit are faulty. The oil circuit is not smooth, the air intake is blocked, and the gas is mixed and the gas is too thin or too thick; The ignition time is too late or the contact gap is too small or too large; engine exhaust pipe leakage; Leakage or detachment of high-voltage distribution lines, leakage or channeling of distributor jacks; The distributor cam is worn unevenly or the spark plug has too much carbon deposit, and the crack leakage.

2. Insufficient cylinder pressure; The cylinder gasket is not sealed, ablative; Valve seat inserts are ablative, unsealed or detached; The valve springs are too soft and work poorly; piston rings bite or match; The piston clearance between the cylinders is too large.

3. The engine temperature is too high; The water pump, thermostat is not working well, the belt is slippery, and the cooling system is too limescale;

Data: The full name of engine filter is oil filter, which is used to remove impurities such as dust, metal particles, carbon precipitates and soot particles in the engine oil and protect the engine.

During the operation of the engine, metal abrasive debris, dust, oxidized carbon deposits at high temperatures, colloidal sediments, water, etc., are constantly mixed with the lubricating oil. The function of the oil filter is to filter out these mechanical impurities and gums, keep the lubricating oil clean, and extend its service life. The oil filter should have strong filtration capacity, low flow resistance, long service life and other properties.

The function of the oil cooler is to cool the lubricating oil and keep the oil temperature within the normal operating range. In high-power reinforced engines, oil coolers must be installed due to the high heat load. When the engine is running, the lubrication capacity is reduced as the viscosity of the oil thins out as the temperature increases.

Therefore, some engines are equipped with oil coolers, which are used to reduce the temperature of the oil and maintain a certain viscosity of the lubricating oil. The oil cooler is arranged in the circulating oil circuit of the lubrication system.

High engine temperature.

The cylinder gasket was blown and worn out, causing oil and water to mix.

Air leakage causes insufficient pressure in the key to prevent disturbance.

Lack of oil parts with reduced lubrication performance.

The timing is wrong.

The engine is hot and hot.

The cylinder gasket is punctured, causing oil and water to mix.

Air leakage causes insufficient cylinder pressure.

Lack of oil, zero hail or reduced lubrication of components.

The timing is wrong.

The engine is rotten at high temperatures.

The cylinder gasket is punctured, causing oil and water to mix.

Insufficient cylinder pressure due to air leakage.

Lack of lubrication of sliding oil parts is reduced.

It's not right when you're hungry and stupid.

There is a problem with the oil supply system, the ignition system, and the cylinder compression pressure, and the conclusion is that there is a problem with the auto parts.

It may be that there is some malfunction in the ignition system, so there will be a lack of power, so you can check this place.

There is a problem with the engine, some parts have aged, and there is no way to increase the power, so it will lead to a decrease in power.

I believe that many people have a feeling that the engine suddenly lacks power and the power decreases, so do you know why, this situation, in fact, the root cause is still inside the engine, it may be that there is a certain problem with the valve clearance, of course. There may be other reasons, what is the specific, we naturally need to know through further inspection, so when we feel that there is a certain problem, we must go to the relevant institutions for professional testing as soon as possible, so as to clarify the relevant problems, and solve our problems, yes, the car is a more complex machinery, so his faults are more, so when we are in real life, if we encounter a car failure, what should we do? Let's take a brief look at it together.

First of all, timely detection, when we find that our vehicle has some fault problems, we must be the first time to attract attention, to avoid further expansion of the fault, and bring some adverse effects, so at this time, we must be the first time to attract attention, and the vehicle will be driven to a professional testing agency, the vehicle for a comprehensive inspection, so that we can find the problem, and understand his priorities. <>

Secondly, it is to deal with it in a timely manner, when we have found the fault problem of the vehicle, then we naturally need to deal with it in a timely manner, so as to further expand his influence, after all, he belongs to a related overall system, if a problem is not dealt with in time, then it is possible to bring other systems to also fail the problem, <>

Therefore, we must pay attention to it, so that we can better find the problem, and deal with the problem at the first time, many times, some big problems, are caused by our lack of attention and ignorance, so we should pay attention to it at the first time, and deal with it immediately, so as to avoid a lot of greater damage.