What is the problem with the weakness of the car. What is the reason for the weakness of the car

Since the background of the car you said is not detailed, it is difficult to tell what the reason is.

If it was possible before, but recently it is found that the acceleration is weak, and the mechanical problems caused by the run-in period is not well run-in can generally be ruled out. With a preliminary judgment, there are the following possibilities:

1. Long-term low speed and high torque in urban areas, stop-and-go, resulting in excessive carbon deposition and affecting power. It is recommended to go to the highway or highway to pull the high speed, increase the engine speed to more than 4000 rpm and keep it for 8-10 minutes (hang 3 gears, the speed is about 80-90 yards), so that the engine burns more fully and eliminates carbon deposits. After that, every 2-3 months, the high speed should be pulled to keep the engine in the best working condition.

2. Throttle pollution, resulting in inaccurate readings of the electronic system, resulting in errors in the calculated value of the computer, resulting in excessive fuel injection. I don't know if you have calculated, whether there has been an increase in fuel consumption recently. If this is the case, it is recommended that you go to the 4S store for a check-up.

Clean the throttle and the effect is immediate.

3. Don't know what car you are? If it is a relatively good car, if the oil with a lower grade is added for a long time, it will also cause the accumulation of impurities in the engine and the combustion is unstable, resulting in insufficient power and even shaking. It is recommended to add oil with a higher grade number appropriately, and add 1-3 bottles of engine and gasoline additives when doing routine maintenance (or follow the advice of the staff of the 4S shop).

It can better protect the engine and play the role of lubrication, and the phenomenon of insufficient power can be basically improved. (If you add 93 oil for a long time, if you add 97 oil, you will feel a noticeable increase in power.) With the same gasoline label, there are more domestic impurities.

If there are no other problems with the car, it is generally caused by these 3 most common reasons. I am a Suteng car, running nearly 40,000 kilometers, when almost 20,000 times also had this situation, the staff of the 4S store told me, and then I paid attention to the above 3 points, and now I feel that the car no longer has this problem.

Have a nice ride!

It is recommended to check whether the engine has carbon deposits and whether the three-way catalytic converter is blocked and can fail. Tail check whether the standard is met. Not meeting the standards are just the two problems.

First of all, the problem of fuel pressure should be considered, and the oil pump should be checked to see if the oil pump is working properly; Air intake system, air grid, throttle, intake valve head carbon deposit; Check whether the voltage is too low and whether the air flow meter, intake pressure sensor, and throttle position sensor are abnormal.

1. The carburetor mixture is too thick or too thin, the fuel is too small, and the oil path is not passable. 2. Whether there is carbon deposition in the combustion chamber, or air leakage. 3. Whether the spark plug ignition is normal. 4. The oil quality is not good, which causes the clutch to slip.

What I'm talking about is very simple, one is the use of substandard gasoline, the second may be due to insufficient air intake and poor combustion, and the third is that the fuel entering the cylinder is not atomized well.

There are many reasons for the inability of a car to accelerate, including high engine temperature, serious carbon deposition in the engine, lack of cylinders in the engine, and aging of the engine. , the following is a detailed analysis.

1. The engine temperature is too high

When the engine is overloaded, the temperature of the engine rises abnormally. At this time, the car will activate the self-protection system, which relieves the pressure on the engine by reducing the power of the engine, so the car will feel powerless to accelerate. In this case, just wait for the engine temperature to drop to a normal level.

2.Serious carbon deposits in the engine:

When the engine has serious carbon deposits, it will hinder the delivery of fuel and make it unable to burn normally, so the car will have symptoms such as weak acceleration and stepping on the accelerator. In this case, the engine carbon deposits should be cleaned up in time.

3.Engine cylinders are missing:

As of August 2019, the majority of cars on the market are four-, six- or three-cylinder engines. When the engine lacks cylinders, it will definitely affect the power of the car. In this case, you should go to a repair shop or a 4S shop for detailed inspection and maintenance.

4.Engine Aging:

After a long time in the car, the engine will naturally age and the power will weaken. This is normal and negligible.

1. Find the oil circuit system: The oil circuit system is the place where the car is easy to have problems. Insufficient fuel entering the combustion chamber can be caused by a clogged injector, a leaking oil line, a reduced gasoline pump, or a blocked gasoline filter.

The main reason for the lack of powerlessness in the car is that the engine suddenly cannot eat the oil, and when the gasoline filter is blocked, the car may not be able to eat the oil when it tilts. If you can't inject fuel at high pressure, you won't be able to atomize the fuel effectively, so the combustion efficiency will be reduced and the horsepower will not reach the desired target.

If you suddenly become extremely weak when the body is tilting, it is likely that there is a problem with the fuel filter in the fuel system. Check that the fuel lines have specific pressure gauges, and the engine also has a valve interface reserved to check the fuel pressure. If you're buying a used car, it's a good idea to swap it out in the first place.

However, if there is no improvement after replacement, it is necessary to check other oil circuit components.

2. Find the air intake system: The engine of the car must be able to run, in addition to oil, but also air, otherwise the engine will not be able to run smoothly. The most common intake problems may be in the air filter, or throttle system blockage.

If there is a problem with these small parts, it will cause insufficient air intake. If it is a problem with these parts, it is okay to repair or replace them in time.

3. Find the circuit system: The circuit system here mainly refers to the electricity consumption of the ignition system. The high-voltage electricity generated by the circuit system is supplied to the spark plug through the wire, and the spark plug jumps over to ignite the gas mixture in the combustion chamber.

Therefore, the wires and spark plugs are most likely to cause poor ignition. The spark plug is a consumable, fixed tens of thousands of kilometers to be replaced, as for the wire, there is also a possibility of poor conductivity due to the service life. Note:

Nowadays, there are many cars that are not designed with wires.

It is estimated that there is a lot of carbon deposition in the engine, so it is recommended that you go to the 4S shop to maintain the car.

For example, if the exhaust pipe is broken, there is no strength, for example, the engine is missing cylinders, and there is no strength, for example, the price of oil is wrong, and there is still no strength.

Reasons for the car's weak acceleration:

1. The reason why the car has a sense of powerlessness is mainly because 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 to oil, the engine 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. If the ignition of the spark plug 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.

There are many reasons for the lack of acceleration, but here are a few of them. First of all, check whether there is a fault code, and if there is a fault code, call up the fault code to analyze the cause of the failure. If not, check the air intake tube for air leaks.

Then check whether the ignition time is loose and comfortable. Then check the fuel injection system, such as fuel pressure and injector operation. Then check that the ignition system, especially the shock sensor and igniter, are working properly.

Also check whether the throttle position sensor is working properly, and check the operation of the EFI circuit and the components related to fuel injection.

Finally, check the cylinder pressure, valve clearance, spark plug operation and valve phase. In addition, there are some parts that will also be affected, such as: the three-way catalytic blockage, the throttle has more carbon deposit, or there is a problem with the circuit, the oil pump is wrong, and the gasoline grid is too dirty.

If the car has a weak acceleration, it is best to send it to the repair shop for repair in time.

There are also some aspects.

1. There are many possible reasons for the lack of force in the car, such as poor oil circuit, handbrake can not be fully released, air filter blockage, air intake pipe or exhaust manifold is not smooth, engine failure and so on.

Second, the main reasons here are as follows.

1. The fuel pressure is too low, resulting in insufficient oil supply and insufficient power, it is recommended to clean the injector and check the oil pressure at the same time.

2. Poor ignition, resulting in poor combustion, obvious waste oil when digging tung in the same round, it is recommended to replace the spark plug.

3. Insufficient cylinder pressure, this common manifestation of lack of cylinder trembling, is also insufficient power, this needs to test the cylinder pressure.

Hello, there are many reasons, such as substandard engine oil, weak spark plug jumping, low tire pressure, engine failure and a series of reasons.