What s the deal with my van that sometimes doesn t fill up when it s moving?

1. The car is unable to accelerate.

It is difficult to increase the engine speed and vehicle speed. This is due to the fact that the intake and exhaust systems are poor, resulting in less air intake and a decrease in engine power.

2. Automatic transmission.

As a result, the ECU controls the automatic transmission to force downshifts according to the opening state of the throttle valves.

When the engine exhaust is not smooth, some of the exhaust gases will be trapped in the cylinder, which will make the mixed steam thinner and the combustion rate will be slower. When the intake valve is opened, the mixture is still combusting, so the combustion mixture is channeled back into the intake pipe through the open intake valve, resulting in a flashback.

4. The sound of "whooshing" of the exhaust pipeline.

When the engine accelerates sharply or closes the throttle, you will hear the "rattling" of the exhaust line. This is mostly a three-way catalytic converter.

Symptoms of breakage, and broken three-way catalytic converter can easily cause engine exhaust blockage.

5. When the engine lacks fire, the exhaust exhaust airflow is uniform, and there is no "abrupt" sound.

When the engine exhaust blockage is more serious, carry out the cylinder breaking test, you will find that the engine shakes obviously, but the exhaust exhaust airflow of the car is very uniform, and there is no due "abrupt" sound due to the lack of cylinder of the engine.

The reason why the truck suddenly can't refuel when it is running is that there is too much sludge accumulation in the engine injector, which causes the oil circuit to be unblocked. The solution is to clean the fuel injector and unplug the fuel injector; Remove the 2 screws that hold the fuel injector in place; Take the entire injector off; Put the fuel injector on top of the throttle cleaner and clean.

Truck is a kind of commercial vehicle mainly designed and equipped for carrying goods, its load capacity is larger than that of general flat cars, the weight is also larger, and the number of axles is also larger, so as to adapt to the limit of allowable axle load and load per linear meter of the line. Wear of cylinder piston pack parts, wear of valves and valve seats, ablation, and warping of cylinder block and head sealing surfaces can all be the causes of engine cylinder leaks.

In this case, most of them are blocked oil circuits, resulting in poor refueling, especially when the flow of fuel in the pipeline is too large, it is easy to cause pipeline blockage, resulting in the situation that the fuel cannot be added when the fuel is filled. If the gasoline filter is clogged, there will also be no oil filling.

If the car's oil pipe is bent, resulting in the car not having enough fuel when refueling**, so that the car can suddenly not be fueled during driving, the car can also run normally, but the power may decrease. Check if the car's oil pump is working properly and take the oil pump out for inspection. If you find that there are a lot of impurities in the oil pump of the car, you need to deal with it in time.

If the vehicle suddenly fails to refuel during normal driving, it may also be caused by excessive carbon deposits. Due to the reason of carbon deposition, the local temperature is too high, and the combustible mixture will be ignited by carbon deposition before it is ignited, which is often called deflagration, which will disrupt the normal operation of the engine, and not only shake but also lead to the situation that the power of stepping on the accelerator cannot go up.

The main reasons are: 1. The fuel is too dirty. 2. The fuel nozzle is blocked.

3. The fuel filter is blocked. 4. The fuel pressure regulator fails. 5. The working condition of the electric fuel pump is poor.

6. Throttle position sensor failure. 7. Computer (ECU) failure. 8. Insufficient cylinder pressure and so on.

Solution: 1. Check the oil pump of the oil tank to see if it is working properly. This is a bit tedious and requires the rear seat to be removed.

Go to a repair shop to check or clean the oil circuit, replace the filter element, etc.

It is very dangerous for the vehicle to be on high speed if it does not refuel.

There should be a problem with the oil circuit.

Please go to the after-sales service for maintenance in time.

Drive safely. Wishing you health and happiness.

However, you can't add oil treatment method:

1. Check the oil pump of the oil tank to see if it is working normally, the motor of the oil pump will make a sound, if the oil pump can not supply oil normally, it will lead to insufficient power of the vehicle.

2. Check that the gasoline filter is good enough to work, whether there is oil leakage or blockage, if the oil leakage is more serious, as long as the vehicle is started, it may ignite the vehicle due to static electricity.

3. Check whether the air inlet pipe is blocked by dirt, disassemble the air filter to see if there is water, and replace the air filter if necessary.

4. Check whether the gas distribution phase is correct, whether the intake and exhaust pipes are sealed, and the throttle can be cleaned, or a clean fuel treasure (fuel additive) can be added to the fuel, which can achieve a certain effect of carbon deposition.

If it is not the cause of the electrical part, it is the mechanical part, which can be dismantled and troubled by the professional master, after all, the regular 4S shop has special instruments and equipment, and the maintenance quality is more guaranteed.

Hello, I am glad to answer for you that the truck sometimes due to the car bump will suddenly not be fueled, pulling the choke is useless, and finally until the shipping machine gradually turns off, the cause of the failure is often the oil pipe root of the fuel tank open welding cracks, a large amount of air will enter the oil circuit, so that the mixture becomes too thin, and even can not be oiled. Poor oil quality can also lead to failure to fill up.

Questions. It is to walk for a while while driving, you can't add oil, and it feels like there is no oil, check the oil pump of the fuel tank to see if it is working properly. This work is a bit tedious, you need to remove the rear seat, open the fuel tank, and take the oil pump out for inspection.

It may be caused by too many impurities in the oil pump and the oil cannot be absorbed. Blockage of the air intake system, such as an air filter. Inspect the air intake system and make professional repairs.

1.It may be that there is a problem with the oil circuit, it is recommended to remove the gasoline pump, check the oil pump, and clean the filter.

3.A faulty throttle can also cause acceleration to be unresponsive.

It may be that private oil has been added, and there are many impurities in it, so just replace the diesel filter element. It may also be that there is air in the oil circuit and needs to be removed.

When the truck is driving, sometimes it can't be refueled, in this case, you should check the oil pump, and the belt tightness of the oil pump.

The oil circuit is blocked, and it is possible that the oil circuit has air ingress.

What's going on with the lack of refueling during vehicle operation.

First, clean the throttle, first.

Second, check whether the spark plug has too much carbon deposit.

3. Check whether there is a lack of fuel, and at the same time check whether your fuel pump is working properly.

4. Check whether the air filter is blocked. In general, the above four points can basically eliminate your faults. If this is the case for a new car, contact the 4S point directly to apply for after-sales.

During driving, step on the accelerator and accelerate weakly, first, check whether the fuel quality is normal, second, use the computer to detect whether the engine system has a fault code, and third, check whether the pressure of the gasoline pump is normal.

Hello! I don't know if your vehicle is an electronic throttle, if it is an electronic throttle, there may be occasional signal failures, resulting in instantaneous failure to refuel, and it will recover when you lift and press it again. Because you can't see the actual car and can't make an accurate judgment of the fault, it is recommended that you contact your local 4S shop for inspection and maintenance.

Hello! According to your description, you need to check a few points, the gasoline pump and its wiring, as well as the throttle and pedal position sensor signals. It is recommended to go to the repair shop for a specific inspection.

If you don't understand, you can ask, I wish you a happy life! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

(1) Oil circuit blockage: Check whether the steam filter is blocked, whether the pump pressure of the gasoline pump is sufficient, and whether the fuel injector is blocked.

2) The exhaust system is blocked, and check whether there is any blockage in the three-way catalytic converter and the entire exhaust pipe.

3) It may be that the throttle has too much carbon deposit, the idle position sensor, and the air flow meter are damaged.

There are many reasons why the car can't refuel when you step on the accelerator, and it is impossible to judge directly. Among them, the fuel pressure is too low or there is gas in the oil circuit, the air flow meter signal on the circuit is poor, the throttle position sensor signal is poor, the ignition coil is damaged, the ignition time is too late, and the spark plug gap is large or small, which will cause the car to step on the accelerator and not add oil. In addition, the blockage of the three-way catalytic converter may also cause this situation, and if the rev rises normally and the engine is loud, it may be in an idle state without the upper gear attached, and the gearbox needs to be inspected.

If the owner does not rise when he steps on the accelerator, and the engine needs to be fully checked, it is recommended that you go to the 4S store as soon as possible for relevant testing.

When driving, you need to reduce the speed of the vehicle to release the throttle, and the fuel supply of the engine is theoretically the idle fuel supply, and the speed is reduced to the number of idle revolutions. However, the inertia force of a high-speed car is transmitted to the engine through the transmission, and the engine acts as a brake to slow down the car. At this time, the engine is pushed above idle speed, and the fuel-saving device makes the engine zero fuel supply.

When driving, press the accelerator slowly and release the accelerator quickly. After releasing the accelerator, the foot must be placed on the brake pedal in case of stopping at any time, and the foot must not be put on the accelerator, so that it is easy to mistake the accelerator as the brake in an emergency and cause a major accident.

In the driving of the car, sometimes due to the car bump will suddenly not be refueled, the pull choke is useless, and finally until the shipping machine gradually turns off, the cause of the failure is often the oil pipe root of the fuel tank to open the welding crack, a large amount of air will enter the oil circuit, so that the mixture becomes too thin, and even can not absorb the oil, so that the engine is turned off. At this time, it is best to repair the place with soldering or use adhesive (such as good glue for brothers). If there is no welding condition during driving, a hose or plastic pipe of appropriate length can be used to insert one end into the fuel tank, and the other end can be put on the oil pipe to ensure that the car continues to drive in an emergency.

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Hello owner, according to your description should be caused by the lack of cylinder in the vehicle engine or insufficient fuel supply pressure, you also need to go to the repair shop to check to determine the fault, I hope my answer can help you, you can click on the avatar to follow me and conduct one-on-one ** consultation Q&A, I will try my best to help you answer questions, I wish you a happy life and a happy family!

My car also has a speed limit, the throttle can only be added to 1300 rpm, close the key, the door is normal when it starts, but.

It may be that the failure of one of the electrical parts of the engine caused the engine to protect itself and limit the power. The second is oil circuit failure.

Cause:

On the one hand, it may be that one of the engine cylinders has failed, or it may be the oil circuit system or air intake system of the vehicle itself, and it is more likely that the circuit system has failed.

Among all the spare parts of the vehicle, the oil circuit system is the most prone to problems in the car. 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.

Fault detection of insufficient engine power:

1. Fuel supply system.

The fuel supply system is one place where cars are prone to problems. Insufficient amount of fuel entering the combustion chamber will cause insufficient power, which may be caused by clogged fuel injectors, oil pipe leakage, clogged gasoline filters, and reduced power of the gasoline pump over time.

2. Air intake system.

The engine of the car needs to run, in addition to fuel, there must also be air, otherwise the engine will not be able to run smoothly. The possible causes of insufficient power in the car are dirty and clogged air filters or throttle systems; Inlet air temperature, inlet air pressure sensor is not working properly, air flow meter is malfunctioning, etc. If there is a problem with these parts, it is enough to repair or replace them in time.

3. Exhaust system.

If the fuel is there, the air intake is also there, if the exhaust is not smooth, it will also cause insufficient power, which is generally caused by the blockage of the three-way catalytic converter.

First, the main reason for the lack of power is the poor combustion quality. However, there are many factors that affect the quality of combustion. The main reasons are as follows:

1. The atomization quality caused by poor fuel injection is not high. It is mainly due to the blockage of the fuel injection nozzle and the entire fuel injection system due to the gum in the fuel;

2. Excessive carbon deposition forms different degrees of detonation, some slight detonation, no obvious sound can be heard, but the loss of power is relatively obvious;

3. The air-fuel ratio is too high. The air-fuel ratio refers to the ratio between fuel and air. An excessively high air-fuel ratio is when the fuel is mixed with air, with too much air and too little fuel, which naturally leads to a lack of power.

The air-fuel ratio is automatically adjusted by the computer system according to the combustion quality, and when the computer system monitoring data shows that the combustion quality is not good, the air intake will be increased to ensure the exhaust gas emission after combustion. Therefore, when the gum in the fuel injection system and the carbon deposits in the cylinder gradually accumulate, due to the gradual deterioration of the combustion quality, the computer system will gradually adjust the air-fuel ratio, and the power will gradually weaken. It's a gradual process.

In order to maintain the best air-fuel ratio, it is necessary to maintain the cleanliness of the engine's fuel injection system and combustion chamber so that the combustion quality reaches a high standard in order to maintain good power.

Fuel additives can be considered to be added to the fuel Mafu multi-way sheet can effectively remove the gum of the fuel injection system and the carbon deposits in the combustion chamber, and at the same time can improve the fuel quality, make the combustion fast and clean, and keep the air-fuel ratio in an optimal state, so that the engine performance can be fully exerted and the power is full. I hope my answer will help you.