What should I do if the car can t accelerate? How to solve the problem of car acceleration weakness?

The solution to the inability of car acceleration is to clean up the carbon deposits of the engine, or go to the 4S shop or professional repair shop for maintenance in time, and lubricate or repair accordingly according to the situation to ensure driving safety. The reasons for the weak acceleration of the car are: 1. Clutch slippage; 2. Abnormal oil quantity; 3. The poor quality of the oil used will affect the gasoline filter element and oil circuit, which may lead to poor oil supply, resulting in weak acceleration and the service life of the three-way catalytic converter of the exhaust system.

If the timing belt is worn, causing the ignition time to be late or early, it will also affect the acceleration performance.

The reasons are as follows, for reference only: 1. The sensor is damaged, the contact is poor or the signal is interrupted, and the computer has a storage function to report the code; 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 conditioning filter is blocked, and 8. The engine itself is caused by mechanical failure.

The specific analysis is as follows; 1. Sensor problems; Sensors include water temperature, crankshaft position, air flow, intake air temperature, oxygen sensor, etc., throttle position, accelerator pedal position sensor, 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 be on, and the power of the engine will also be affected. 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.

Hello, the fault you described is the lack of power, you need to check it, the air cleaner, the fuel injector, the spark plug, if there is no problem with the above few parts, then check the cylinder pressure.

Go to 4S to check whether the acceleration is weak due to the increase in carbon deposits, or the three-way catalysis needs to be cleaned, or other reasons.

When the acceleration of the car is weak, it should be accompanied by the occurrence of trembling when the engine accelerates, and there may also be guns, black smoke, etc. The reasons for it are manifold. It is mainly reflected in the three major aspects of oil, electricity and machinery.

First, the oil circuit failure.

Many people think that throttle carbon deposits will affect the acceleration performance of the engine. However, I think that throttle carbon deposition only affects idle instability, and has little impact on engine acceleration performance.

The air filter element is blocked or water ingress will make the air volume small, resulting in too thick the mixture, incomplete combustion of the engine, and poor acceleration, at this time, the exhaust pipe will be seriously smoky.

Cracks in the oil pipe or loose air leakage in the joint, and insufficient pressure of the oil pump, resulting in poor oil supply and weak acceleration.

The injector is poorly atomized or clogged, resulting in the cylinder not working well or not working. Affects acceleration performance. Black smoke may come out of the exhaust pipe.

The issue of oil products is also an aspect. If the water content of the oil is too large, the exhaust pipe will emit white smoke.

Second, circuit failure.

There is a problem with the air flow meter, which causes a decrease in the air intake, resulting in an over-concentrated or over-thin mixture, which affects the acceleration performance.

The spark plugs of individual cylinders are damaged, that is, the cylinders are missing, which affects the acceleration performance. Also, leakage of cylinder line, etc.

High water temperatures or bad temperature sensors can also affect acceleration.

A clogged three-way catalytic converter or a faulty oxygen sensor can also cause poor engine acceleration (many people think that the oxygen sensor does not affect the engine, only the emissions).

Third, mechanical failure.

Engine valves, cylinder liners, pistons, and rings are worn out, resulting in cylinder pressure not meeting the requirements.

The intake valve clearance is too large, and the exhaust valve clearance is too small. Or the intake and exhaust valves are out. This will lead to a lack of cylinders. Affects acceleration performance.

The timing belt (chain) wears out, resulting in a sooner or later ignition time pattern that also affects the acceleration performance.

A collapsed engine gasket can also cause this problem.

Excessive carbon build-up in the cylinder. It's also a reason.

In fact, there are many reasons why the engine has poor acceleration. It should be judged according to the various conditions of the vehicle. For example, the number of kilometers driven, the age of the vehicle, the fault point and so on. This requires some maintenance experience.

Many people say that it can be plugged into a computer for testing. But beware, like many mechanical failures, computers can't detect them. For example, the size of the valve clearance cannot be detected by the computer. Of course, the fault of the circuit is very easy for the computer to detect.

Through the above analysis, it can be seen that there are many reasons for poor engine acceleration. There is still a certain amount of experience in judging this aspect. Otherwise, it will be like a dog biting a hedgehog with nowhere to start.

1. Exhaust modification.

Exhaust modifications are relatively simple modifications designed to allow air to enter the engine more quickly, thereby increasing engine power. However, the owner needs to note that the exhaust modification mentioned here is not just to change the "tailpipe", but to replace the exhaust pipe in the middle and tail end. Although this project is relatively simple, because of the need for special original parts, ** may not be acceptable to all car owners.

2. Tire modification.

Tire modification is simpler than exhaust modification, and it is also easy for car owners to accept. In the modification of tires when the spring rental, there are many car owners will take the opportunity to widen the rim tires, here to remind the owners that at the same time of widening, be sure to adjust the value of the vehicle as the standard, otherwise it will affect the normal operation of other parts of the vehicle.

3. Three-way catalytic modification.

There is a reason why three-way catalysis is taken alone, because three-way catalytic modification has a great impact on automobile engines. With the upgrading of three-way catalysis, the high-flow three-way catalysis that can meet both emission and power needs is now available.

4. Modify the engine intake system.

The main purpose of modifying the engine intake system is to improve the volume of the engine and the efficiency of the charge, so as to improve the engine power. In general, the modification of the engine intake system can be achieved by modifying its material and the length of the intake tract. If the owner doesn't want to be so troublesome, he can directly modify the car's grip air filter.

Exhaust and engine intake modifications.

The modification of the exhaust system, to put it bluntly, is to reduce the exhaust back pressure, and the definition of the back pressure is: because of the pressure inside the exhaust pipe, the force that hinders the exhaust pulse. Reducing the back pressure actually makes the alternation of suction and exhaust smoother, which is equivalent to extending the overlapping time of the valves.

For example, change the high-flow air grid (such as mushrooms, washing air filters, etc.); Modified mechanical supercharger and exhaust gas supercharger all belong to the category of modified air intake; There are also three sections of exhaust, ternary, silencer drum, and shock absorbing drum, three parts, respectively, and all replacement effects are different; If you modify the above two superchargers, you can increase the power by about 30%. Simply replacing the high-flow air grid can increase the speed of air intake, but the total amount will not change. Modifying the exhaust pipe to reduce the exhaust backpressure will increase by 3-5%.

Refit. ECU modification, currently known as ECU upgrade, car computer upgrade, brush ECU, etc., in China, in fact, the formal translation is ECU tuning. How the brush ECU works:

By rewriting the program, the oil supply and ignition time are finely adjusted on the basis of the original factory data. Optimize the parameter settings to increase the output horsepower, increase the torque or reduce fuel consumption. Increasing horsepower and torque correspondingly increases fuel consumption, and decreasing horsepower and torque correspondingly reduces fuel consumption.

3.Tyre. Tire modification is simpler and easier for car owners to accept.

First of all, after modifying the tires, the visual effect is better, and the car is more dynamic. Just remind the owner that changing small tires can improve the starting speed, acceleration speed and reduce fuel consumption, the disadvantage is that the stability of the whole vehicle is relatively poor, and the opposite is true for large tires.

When the acceleration of the car is weak, it is likely to be the car's. Caused by excessive carbon deposits on the throttle, you should find a clean-up egg for the engine repair.

How to solve the problem of car acceleration weakness? Is there any, I want to know!

The acceleration weakness of the car may be due to serious carbon deposits or congestion on the road, and the high start-stop frequency of the car, resulting in a sense of acceleration weakness when accelerating, and it may also be that the oil quality is relatively poor.

What is the reason for the sudden acceleration of the car.

1. The engine oil circuit system is the place where the car often has problems, the fuel injector is blocked, the oil pipe is leaking, the power of the gasoline pump is reduced, and the gasoline filter is blocked. The main reason why the car has a sense of powerlessness is that the engine does not have enough oil when going uphill, the combustion efficiency decreases, and the horsepower does not meet our requirements.

2. In addition, the same is true for the air intake system, in addition to the engine needs oil, it also needs air, if the air filter, throttle and other components are blocked or there are problems, resulting in insufficient air intake, it will also cause the car to accelerate weakly and slowly.

3. The spark plug is also the source of common faults, if the spark plug ignition is poor, it may lead to the problem of weak acceleration.

4. If the car is sluggish, and the car will feel the steering wheel or body shake significantly when it stops, then it means that at least one cylinder of the car's engine is running abnormally or stalling. In general, a four-cylinder engine can still run if one of the cylinders does not start, and as the number of cylinders increases, this symptom becomes more difficult to detect.

5. Exhaust system failure, exhaust system failure mainly refers to poor exhaust, which is generally caused by three-way catalytic crushing, of course, if someone is naughty and stuffs potatoes, steel wool balls, etc. into your exhaust pipe, it is another matter. If the exhaust pipe is blocked, the engine power will be reduced.

The first is the failure of the engine's oil circuit system, specifically the blockage of the fuel injector, the leakage of the oil pipe, and the decrease in the power of the gasoline pump, which will cause the car to accelerate slowly and accelerate weakly; It is recommended that the owner clean the fuel injector and engine oil system.

The second is the failure of the engine's air intake system, in addition to the engine needs oil, it also needs air, and the gasoline filter, throttle and other parts are blocked or have too much carbon, which will lead to insufficient air intake, and will also cause the car to speed up slowly and accelerate weakly.

The third is the spark plug, the spark plug is the source of many car failures, and the ignition performance of the spark plug will also lead to slow acceleration and weak acceleration of the car; It is recommended that the owner replace the spark plug.

The fourth is the problem of engine cylinders, if the engine has a cylinder that does not work, although the engine can run, but the power is far from enough.

The fifth is to turn on the air conditioner in the summer, and the small displacement car will feel that the acceleration is very difficult, and the fuel consumption increases very quickly; This is because when the air conditioner is working, it needs to drive the compressor to do the work, and the power of the compressor is very large, so the engine can be said to be too busy, and the speed will naturally be very slow.

The sixth is the insufficient tire pressure of the tire, which will flatten the tire of the car, and at this time it will also lead to the weakness of the car's speed. In addition, it is necessary to learn to judge the problem according to the symptoms, for example, black smoke from the exhaust pipe, then there is a problem with the ignition system and throttle during combustion; If there is blue smoke, then it is possible that the engine oil has run into the combustion chamber, which is what we often call burning engine oil.

What are the reasons for the car's inability to accelerate?

In long-term use, automobiles are prone to various failures, such as abnormal braking performance, increased fuel consumption, insufficient acceleration, etc. Among them, insufficient acceleration is undoubtedly one of the most common and troublesome failures. So, why does the car have a failure with insufficient acceleration?

What parts tend to affect the acceleration performance of the car?

The acceleration performance of a car is closely related to the operation of the engine. We usually increase the opening of the throttle after pressing the accelerator pedal. At this point, the fuel** system will input more fuel to provide more power.

Therefore, the failure phenomenon of the car not being able to accelerate may involve many car parts.

First of all, most of the reason why a car feels powerless to accelerate is because the engine doesn't have enough fuel or empty gasoline while driving. Therefore, if the pipes, parts of the fuel system, and many parts of the air intake system are clogged, such as the oil pipe is clogged, or the air air filter, throttle valve and other parts are clogged, it will lead to an abnormal situation where the car cannot accelerate.

Secondly, if the amount of fuel and air gas is appropriate, if the car still appears to be underpowered, or even has obvious idle shaking, it is likely that the engine cylinder is not working properly, or even causing the cylinder to stall. At this time, the elimination method should be used in time to find out the faulty cylinder and repair it to prevent greater damage to the vehicle.

In addition, sometimes the air intake system and fuel system are normal, but the mixture concentration can also be abnormal, which is most likely caused by a problem with the exhaust system. Generally, the exhaust system here is not smooth, and in most cases it is due to a damage to the three-way catalytic converter system or a blockage of the exhaust pipe, which leads to a decrease in engine power.

Finally, when a car's powertrain fails, there is a noticeable anomaly. For example, when the engine burns oil, the exhaust pipe will emit a lot of blue smoke, and when the car has a lot of carbon deposits, it will make it difficult for the car to start cold, etc. Once you understand how these failures work, it becomes very easy to solve.