After the engine overhaul, the water tank is also open, and the water is still back

In general, there are two main reasons for the backwater of the car water tank, the first is because the temperature is too high, and the second is that the liquid level is too high。But there are also some car owners who think that the temperature of their car is not high, why is there still a backlash? Even after parking, there is still a strange sound coming from the surrounding water town, which may be caused by the backlash caused by the combustible gas entering the engine waterway.

1. Anti-water judgment.

In this case, the driver can directly press the throttle, and if the tank is backwater, it may be due to a notch crack in the wet cylinder liner or cylinder head. Because when the engine is working normally, the pressure of compressed air or gas in the cylinder gradually increases, and today it is greater than the pressure of the coolant, then these combustible gases will directly enter the engine from the gap, resulting in water bottle backwater. If there is no air in the coolant during the engine operation, whether the water temperature is too high or the water temperature is low, the coolant will not flow out of the tank nozzle when the throttle is retracted, and the coolant may be sprayed out from the nozzle when the throttle is closed.

2. Is it related to thermostats?

Under normal circumstances, the water tank does not have much to do with the thermostat. Generally, the water tank backwater is related to the blockage of the return channel in the upper water chamber or the upper part of the thermostat, because the coolant in the lower water chamber of the water tank and the water pump inlet pipe is completely under negative pressure. If the throttle is raised or stopped suddenly, the pump will also randomly stop working.

If the return pipe of the expansion tank is blocked or not smooth, coolant will flow down the expansion tank into the refill port at high pressure.

3. How to deal with it.

In the case of water backing up in the water tank, we must first find a safe place to stop the car, do not stop the engine immediately, it is best to let the cooling water circulate for a while, which can reduce the temperature of the engine, and then we add antifreeze to it. If the ignition is turned off, the coolant will not have time to cool down in the case of boiling, which may cause damage to the engine itself, and it will be troublesome to repair it at that time. Although we can judge many problems ourselves, it is still recommended to directly seek a professional for repair, and never make your own decisions.

The main reason is that there may be a problem with the cylinder head of this tank, and it is also possible that this tank is broken. That's why this anti-water phenomenon occurs.

It is very likely that the problem of the cylinder liner and cylinder head is generally caused by cracks or chips, so you must pay attention to it.

It is that the accelerator is stepped on too hard, and there is a problem with this water tank, so it will be backwater, and the water tank must be stopped in time for repair.

There are two possibilities for water reversal:

1. The water pump is leakingEntering the water tank, after the car starts, there will be water coming out of the water tank mouth, and the water pump will not rotate after removing the fan belt, and the water will not be reversed; Just change the pump.

2. The reason for the water pumpIt is the cylinder head gasket leakage, the high pressure in the cylinder enters the waterway, such a situation will be disassembled and you will find that there is a black smoke line from the cylinder outward on the mat, it means that the mat is broken, it is good to change a new mat, if it is more than 5 years of machine such a situation, it is best to find a milling machine to cut a knife, these situations to find a skilled auto repair shop.

Maintenance of the engine.

1. Engine lubrication is mainly to reduce the friction between moving parts, reduce the wear of parts, and make them move freely.

2. Cleaning is the basis for preventing corrosion of parts, reducing wear and tear of parts and reducing fuel consumption, and its primary operation includes the care of the surface of parts and the cleaning of the surface and interior of each assembly and parts.

After the engine of my van stalled, the auxiliary water tank was anti-water.

If the water tank cover is normal here, then you need to check whether the water temperature of the engine is high after stopping.

Engine backwater refers to the fact that the coolant is sprayed (turned) out of the water tank or expansion tank at the water filling port during the working process or at the moment of shutdown.

1. When starting the engine or increasing the throttle to increase the engine speed (regardless of whether the water temperature is high or low), the water filling port of the water tank (expansion tank) has coolant sprayed (turned) out (there may also be a large amount of gas sprayed out at the same time).

The main reasons for this phenomenon are:

Punch gasket (wet cylinder liner) or cylinder liner and cylinder head have large sand holes or cracks. This is due to the fact that the pressure of compressed air or gas in the cylinder is greater than the pressure of the coolant in the cooling channel during the working process of the engine. These gases can be pressed into the engine waterway through the gasket or through the liner or through large holes or cracks in the cylinder head.

Forcing the coolant in the engine waterway to spray (flip) out of the water tank (expansion tank) inlet.

2. There is no air in the coolant when the engine is working (no bubbles when the coolant is running), and there is backwater.

When the throttle is closed, the coolant is sprayed (turned) outward from the water inlet.

The reasons for this are:

The return (gas) pipe leading to the expansion tank in the upper water chamber of the water tank or the upper part of the thermostat is blocked or not smooth.

There are two situations when the car is not hot but the kettle is anti-water:

1. When the foot steps on the accelerator, the water tank is backwater.

This situation is mainly because the wet cylinder liner or cylinder head has a large gap or crack, and the pressure of compressed air or gas in the cylinder of the engine is greater than the pressure of the coolant in the cooling water channel when the engine is working, and these combustible gases will enter the engine water channel from the gap, so there will be a water bottle backlash phenomenon.

2. There is no air in the coolant when the engine is working.

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Question: I'm a new car.

Answer: The water tank is still anti-water in the case of no high temperature in the engine, which is a failure of the circulation system of the vehicle engine, resulting in the inability of antifreeze to effectively circulate inside the engine, and causing the problem of anti-water, your new car is a new car, it should be caused by the water in the water tank is too full, and the water in it can be appropriately reduced.

Answer: The gas pedal is against water, this situation is that there is air in the water tank, you don't pay attention to emptying when you change the water in the water tank, you drive the car, wait for the water in the tank to irrigate, and when the air inside comes out, close the water tank lid and it's OK.

Question, but I've driven four or five hundred kilometers, and it's okay before, how did this be emptied, there is no water tank on it, and the water tank cover.

Hello 1

When the big foot presses the accelerator, the water tank backs up. This situation is mainly because the wet cylinder liner or cylinder head has a large gap or crack, and the pressure of compressed air or gas in the cylinder of the engine is greater than the pressure of the coolant in the cooling water channel when the engine is working, and these combustible gases will enter the engine water channel from the gap, so there will be a water bottle backlash phenomenon.

The water tank is still backwatering when the engine is not high, which is a failure of the vehicle's engine circulation system, resulting in the inability of antifreeze to circulate effectively inside the engine, resulting in the problem of backwater.

There are two reasons, one is that the cooling system has air and needs to be exhausted. Second, the cylinder gasket is damaged and the cylinder gasket needs to be replaced.

This is due to the ingress of air into the cooling system, which may be caused by a crack in the head gasket.

It may be that the water tank is blocked and the water does not circulate, but the fan turns and the fan cools down.

If there is a crack in the cylinder, it can be repaired with YH-101.

When the big foot presses the accelerator, the water tank backs up. This situation is mainly because the wet cylinder liner or cylinder head has a large gap or crack, and the pressure of compressed air or gas in the cylinder of the engine is greater than the pressure of the coolant in the cooling water channel when the engine is working, and these combustible gases will enter the engine water channel from the gap, so there will be a water bottle backlash phenomenon.

Working principle: The water tank is an important part of the water-cooled engine, as an important component of the water-cooled engine heat dissipation circuit, it can absorb the heat of the cylinder block and prevent the engine from overheating due to the large specific heat capacity of the water, and the temperature increase after absorbing the heat of the cylinder block is not very much, so the heat of the engine passes through the liquid circuit of cooling water, and the water is used as the heat carrier to conduct heat, and then dissipates heat in a convective way through a large-area heat sink to maintain the appropriate working temperature of the engine.

The pressure cap of the water tank or expansion tank is damaged, the opening pressure is too low or the position of the expansion tank is too low, and there is air in the coolant (bubbles when the coolant is running) when the engine is working.

The water tank is an important part of the water-cooled engine, as an important component of the water-cooled engine heat dissipation circuit, it can absorb the heat of the cylinder block and prevent the engine from overheating due to the large specific heat capacity of the water, and the temperature does not rise very much after absorbing the heat of the cylinder block, so the heat of the engine passes through the liquid circuit of cooling water, and the water is used as the heat carrier to conduct heat, and then dissipates heat in a convection mode through a large area of heat sink to maintain the appropriate working temperature of the engine.

1. If there is gas in the waterway, solve the exhaust gas.

2 The thermostat is broken, what do you say about it?

3 The water tank is blocked, and the permeable water tank.

4. There is a possibility of gasket leakage, solve the problem of changing the cylinder gasket.

Generally, the backwater in the car water tank is caused by too high temperature or high liquid level. When the big foot presses the accelerator, the water tank backs up. This situation is mainly because the wet cylinder liner or cylinder head has a large gap or crack, and the pressure of compressed air or gas in the cylinder of the engine is greater than the pressure of the coolant in the cooling water channel when the engine is working, and these combustible gases will enter the engine water channel from the gap, so there will be a water bottle backlash phenomenon.

There is no air in the coolant when the engine is working.

Hello. Friends engine water tank anti-water reasons and maintenance methods: 1. The water pump is leaking, entering the water tank, after the car starts, there will be water emerging from the mouth of the water tank, and the water pump will not rotate after removing the fan belt, and there will be no backwater; 2. Then just change the water pump.

The reason for the water pump is that the gasket at the cylinder head is leaking, and the high pressure in the cylinder enters the waterway. 3. If there is such a situation for more than 5 years of machines, it is best to find a milling machine to cut a knife, and these situations can generally be solved by a skilled auto repair shop. Hope it helps.

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Three reasons:1The first is that the cylinder gasket and the airway are cross-aired, resulting in water backlash.

2.The second reason is that the pump does not circulate the water, resulting in high temperature backwater.

3.The third reason is that the thermostat is broken, resulting in water not circulating, and high temperature backwater.

To put it simply, the temperature is too high, and another reason is that the cylinder gasket has begun to be bad, because this situation will occur after the compressed gas is not sealed, and the main observation of water quality can be distinguished!

If the temperature of the water tank is too high and the high temperature occurs, it is easy to backwater.

Hello, the reason why the water tank backs up after the engine is stopped is: 1The thermostat fails or the contact is not working, and the fan loses its function.

2.There is fouling formation in the water tank, the heat dissipation is not good, and the temperature of the water tank is high. When driving, under the action of speed, the water tank keeps running at a high temperature, and the temperature rises after stopping, and the water tank boils.

3.Car computer ECU, control failure, fan not working.

The engine does not have a high temperature water tank water treatment method as follows:1. Pull over. The best way to deal with high water temperatures is to pull over and cool down naturally.

But don't slam on the brakes and accelerator, and don't turn off the engine all at once, let the car sit and then turn it off.

2. Add a certain amount of distilled water. If the water temperature is too high and the lamp is faulty, you can add some distilled water by yourself to solve the problem. However, be careful of the high temperature of the water tank lid, it is best to wait for the vehicle to sit for a while before opening the water tank lid with a wet towel.

3. Check the cooling fan. The vehicle generally does not have high water temperature inexplicably, if the cooling fan is faulty, you should go to the surrounding repair shop in time to repair.

There are two situations when the car is not hot but the kettle is anti-water:

1. When the foot steps on the accelerator, the water tank is backwater. This situation is mainly because the wet cylinder liner or cylinder head has a large gap or crack, and the pressure of compressed air or gas in the cylinder of the engine is greater than the pressure of the coolant in the cooling water channel when the engine is working, and these combustible gases will enter the engine water channel from the gap, so there will be a water bottle backlash phenomenon.

Water tank anti-water and thermostat.

It is not related, it is generally related to the backwater of the water tank and the blockage or unobstruction of the return pipe leading to the expansion tank in the upper water chamber of the water tank or the upper part of the thermostat. Because the coolant in the water tank lower chamber and the water pump inlet pipe are in a negative pressure state, such as sudden throttle retraction or shutdown.

If the water tank upper water chamber and the return pipe leading to the expansion tank on the thermostat cover are blocked or not smooth, the coolant will be quickly reversed along the inlet pipe of the expansion tank to the water filling port under the action of high pressure, resulting in the water tank backwater.