What happens when the car has weak acceleration and high fuel consumption

There could be two reasons for this:

Carbon deposits occur in the valves, idle motors, air intakes, inside the combustion chamber, and spark plugs, so a stop-fire occurs when the car is idling.

The car drives for a long time on a congested road, accelerating and slowing down, so it will eventually cause the car to show a feeling of weakness when driving again.

One of the most important reasons for the weak acceleration of the car is the poor quality of the oil used, which will affect the gasoline filter element and oil circuit, which may lead to poor oil supply, resulting in weak acceleration; It will also affect the service life of the three-way catalytic converter of the exhaust system, and if the three-way catalytic converter is blocked, it will also directly affect the acceleration of the vehicle, and will also lead to an increase in fuel consumption, resulting in the phenomenon of weak acceleration.

The clutch is heavily worn, causing slippage.

Solution: Check the valves, idle motor, intake tract and inside the combustion chamber and spark plugs, and clean up if there is any blockage.

Problems caused by traffic jams can be temporarily turned off and waiting.

Replace the fuel of the car, do not use poor quality oil, it is easy to cause permanent damage to the car.

Install snow chains.

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.

1. The car has carbon deposits.

Carbon deposition is a major enemy of the engine, every car can not escape, with carbon deposition will appear a variety of failures, some are still difficult failures. So there are a lot of car repairers are like this, the car fault can not be found, first clean the carbon deposit, and then find another place after washing, use the elimination method. The carbon deposits are generally on the throttle valves, piston tops, and intake valves.

2. The spark plug should be replaced.

Many car owners do not pay much attention to spark plugs, thinking that as long as they do not malfunction, they can always be used, which is not correct. Although it is not damaged, the electrode gap becomes larger, the carbon deposition is serious, and even a part of the electrode burns out, which will lead to insufficient ignition energy. Insufficient energy will lead to the wrong ignition timing and delayed ignition, resulting in incomplete combustion, increased fuel consumption, accelerated carbon deposition generation and decreased power.

3. The air intake system or fuel system is blocked.

Generally, the air filter or gasoline filter element is not replaced for a long time, which leads to poor air intake and poor oil supply after being dirty, which in turn leads to a decrease in power. Therefore, the maintenance of the basic vehicle and the replacement of the oil filter must be done on time and on demand, especially the impact of the air filter element is relatively large, and it does not need to be replaced if it is not dirty. If it is dirty and has to be replaced with a new one, there will be many problems that affect the efficiency of the air intake.

1. Engine oil system failure: The engine oil system is a place where the car often has problems, and 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 the requirements.

2. Turn on the air conditioner in summer: In the summer, the air conditioner will feel that the acceleration is difficult, and the fuel consumption increases significantly, because the air conditioner needs to drive the compressor when working, and the power required by the compressor is very large, and the engine has to carry such a large internal friction, so it is inevitable that the acceleration will be slow and the acceleration is weak.

1. The engine cylinder pressure is insufficient.

2. The fuel pump and gasoline filter are blocked, so that the engine power is insufficient due to insufficient oil pressure.

3. Overheating of the engine will cause poor lubrication, and the engine will enter the protection mode, reduce the engine power, and cause the engine to accelerate weakly.

4. Poor fuel quality causes the power of the car to be reduced and the power to be reduced; Or because the fuel cap vent is blocked, the gasoline fuel pipe is partially blocked, and the oil pressure is insufficient, resulting in the mixture being too thin and the engine acceleration is weak.

5. The fuel injector is blocked, and the over-concentrated mixture leads to poor acceleration.

6. The exhaust part is not smooth, resulting in poor acceleration.

7. The air intake system is blocked, and the insufficient gas volume will cause insufficient combustible mixture, resulting in a decrease in engine power.

8. Incorrect ignition timing can also cause insufficient power and so on, depending on the situation.

1.Look at the oil system.

The vehicle's oil circuit system is more prone to problems, and the main reason for the weak acceleration is that the engine does not have enough oil. Plugged fuel injectors, leaking oil lines, reduced gasoline pump power, or clogged fuel filters can all contribute to this. For example, if the fuel injector is clogged or the gasoline pump fails, if the fuel cannot be injected at high pressure, the oil will not be effectively atomized, and of course, the horsepower will not reach the desired target.

If you have just purchased a used car, it is recommended that you check the parts mentioned above first to avoid affecting the road in the future.

2.Look at the air intake system.

The essential condition for the engine to function properly is not only the availability of sufficient oil**, but also the availability of air. A clogged air filter, or throttle system, can cause insufficient air intake.

3.Look at the circuit system.

The internal combustion engine needs a spark plug to ignite the fuel entering the engine, so the quality of the spark plug directly affects the ignition state. Spark plugs are consumables and need to be replaced for a fixed number of kilometers.

4.Carbon deposition impacts.

Carbon deposits can be formed by poor sealing of valves and seat inserts, poor quality of fuel used, or driving at low speeds. If the car is used for a long time, too much carbon will also cause the vehicle to be underpowered.

5.Use of air conditioning.

Do you still find it difficult to accelerate when you turn on the air conditioner in summer? In fact, you don't have to worry about this situation, because the air conditioner needs to drive the compressor when it is working, and the compressor needs a lot of power when it works, which will increase the load on the engine, and the fuel consumption will increase significantly.

6.Check the water temperature sensor.

Generally, the engine of the vehicle has only one water temperature sensor, but for the high-power engine, there are two, which is used to detect the water temperature of the engine and feed the signal voltage back to the engine management unit. The water temperature signal is a very important signal in the starting signal, if the engine is running in the water temperature sensor signal error, it will cause the engine to alarm, and may cause unstable idling, fuel consumption and so on.

7.Insufficient tire pressure will also cause the car to speed up weakly, so pay more attention.

1. Ignition coil.

If there is a problem with the ignition coil, it will cause some cylinders to not operate and the power will decrease, but the oil that should be sprayed will still be sprayed, but it will not play any role, so the fuel consumption will rise.

2. Spark plugs.

If there is a problem with the spark plug, then it will lead to insufficient ignition energy, and the same amount of oil will provide different power, so the fuel consumption will also increase.

3. Air filter.

If there is a problem with the air filter, the intake air is easy to be blocked, the oil-gas mixture becomes poor, the combustion is incomplete, the natural power is insufficient, and the fuel consumption will slowly increase.

4. Battery. If there is a problem with the battery, the voltage is unstable and the power is insufficient, not only is it difficult to ignite, but also the power of the car will be insufficient during use, and the battery is charged frequently, which will also increase the fuel consumption of the car.

5. Tire pressure. If there is a problem with the tire pressure, it is as hard as you pedal a bicycle with flat tires, and the car tire pressure is insufficient to consume fuel, which will naturally lead to an increase in fuel consumption.

6. Carbon deposits. Carbon deposition is the most common, as long as the car is in use, there will be carbon deposition slowly, which will not only affect the power of the car, but also affect the combustion quality, and even absorb fuel, which has a particularly large impact on the increase of fuel consumption.

Engine shaking, high fuel consumption, and weak acceleration are all to blame for the throttle!

There are many reasons for the high fuel consumption of automobiles and the lack of acceleration, there are air filters, gasoline filters, fuel injectors, aging nozzles, etc., go to the repair shop to check it.

Generally, when we receive this kind of fault, we will check how much the mileage of the vehicle is, if the mileage of the car is more than 60,000 kilometers, we will ask the owner whether the spark plug has been replaced, but our ignition coil is not very easy to check, we can read the data stored in the engine through the maintenance computer to determine the problem of the coil, and then check whether the ignition coil is damaged through the car multimeter. If you're a novice, I'll teach you, and I guess it's enough. It's not that you understand it as soon as I say it, so I won't go into it here.

If your car does not burn engine oil, the above points should solve the problem. Remember, if the engine doesn't shake, don't think about spark plugs and throttles.

<> transmission slippage is mainly manifested in the engine throttle speed is very high and the speed rises very slowly, such a problem will also cause driving weakness and fuel consumption increase, the specific problem is recommended that you go to the maintenance shop to check whether you do not know how to consult, first of all, the main reason for the high fuel consumption of the car is 3: first, because the car needs acceleration when starting; Second, the parts inside the car also need acceleration; Third, the mixture is too thick when the car accelerates. The greater the drive force f, the more fuel is required.

You must know that the acceleration of the car is very large when it starts, so our intuitive feeling is that it consumes special fuel when it starts. Not for some cars, but for all cars, the fuel consumption is not too low at the start. For example, those cars with instantaneous fuel consumption display can easily increase the instantaneous fuel consumption at the start.

However, instantaneous fuel consumption is only a superficial phenomenon, and the deeper reasons are complex, involving issues such as engine efficiency.

The main engine wear and tear of the car is serious, and you can buy a new kinetic energy economizer, which can significantly reduce noise, reduce engine wear and improve the power of the car. When the car runs, the drag caused by its own weight is gone. The weight of oneself and the inertia due to the weight form a forward moment that is infinitely close to the forward direction.

But at rest, this moment is perpendicular downwards.

Vehicles have high fuel consumption, and carbon deposits are often the culprit. Frequent idling, short-distance use, and poor fuel quality can lead to increased carbon deposits. Carbon deposits not only suck away fuel, but also reduce engine efficiency, resulting in poor ignition, increased fuel consumption and even engine scrap.

It may be because there is a problem with the engine or fuel tank of the car, so the car will be very weak when it starts, and the car should be sent to the 4S shop for repair and inspection in time.

It may be that there is carbon deposit in the engine, so it will cause the car to accelerate weakly and consume more fuel than before.

1. Oil circuit problems.

When the power of the vehicle is significantly weakened, it may be caused by oil road problems such as poor fuel injection or poor atomization, and in serious cases, it may cause the vehicle to fail to drive. In the final analysis, the existence of these problems is mainly due to excessive carbon accumulation in the fuel injector, which clogs the needle valve of the fuel injector, resulting in poor fuel injection or poor atomization.

2. Circuit problems.

Circuit problems mainly include wire problems and spark plug problems, when there is a problem with the vehicle wire, affecting the work of a sensor, these problems may also occur. In addition, it is the spark plug problem, and the main problem of the spark plug is too much carbon deposition and aging, when these problems appear, it will also cause insufficient power of the vehicle.

3. Air intake system problems.

When there is a problem with the air intake system of the vehicle, it will lead to too little air intake, not enough oxygen and fuel to fully burn, not to mention the fuel cost, but also affect the power of the vehicle.