Why does not the machine pull: causes?

Modern engines are characterized by good power, sufficient level of economy, less polluting the environment. When the behavior of the power unit is changing, it is immediately noticeable. If the machine does not pull, the reasons for this phenomenon can be very different. Let's look at them.

The engine may lose traction for various reasons. There is a huge number of various malfunctions, which result in a loss of power. Sometimes the craving disappears without any symptoms. The unit does not produce unusual noises for it, it does not vibrate - it's just that its traction was gone. Every day the car goes worse and worse. Probably, this situation is familiar to every motorist.

Low fuel quality

If the machine does not pull, the reasons for this phenomenon can be very different. But the first is the quality of fuel. Try to remember at which gas station you last ran your car. Maybe the fuel is not too high quality? At gas stations sometimes sell such gasoline that the engine and does stop working until the tank is empty and there will not be filled with better fuel.

Check the air filter

Too dirty the filter does not allow enough air to create a fuel mixture. This can lead to a significant drop in engine power, and fuel consumption will increase significantly.

In addition to the work of the motor can affect the quality of materials that were used in it. Buying the next filter, many people try to buy the cheapest products that are only available. You should not buy anything, because the further repair of the motor will be much more expensive.

There are many different stories about cheap and non-original filters. These products are torn, and then through the chain there is a series of serious malfunctions, up to failure of the piston rings. To check the condition of the air filter, you need to open the hood, get the element out of the housing and visually assess the condition. If necessary, the part is immediately changed.

Fuel filter

Sometimes, when in a certain state, the fuel cells do not supply enough fuel to the fuel system of the car. As a consequence, the machine does not pull. The reasons are clear, and to check the fuel filter, it is dismantled, and the remaining fuel is drained. Then it is blown. If the element is clean, then it is very easy to blow. If it is rather difficult or impossible to blow it, then it should be discarded. Otherwise it will be necessary to change the fuel pump in the future.

Pressure in the power system

The fuel pump is located in the fuel tank, on the injector motor. On the carburetor engines, the pump is detected under the hood, on the engine. For most cars, power losses can be associated with a fuel pump.

On many modern cars, there are special connectors on the fuel line for connecting a manometer. So you can check the pressure. If there is no connector, you will have to work hard to connect.

The pressure values can be found in the instruction manual of the engine. In the highway there is a special regulator, with which you can drop excess pressure directly into the tank. This regulator may be misconfigured, or it may leak. To check it you will need an ordinary air pump. With it, you need to gradually raise the pressure level to the one indicated in the passport to the motor. If you did not manage to increase the pressure, and the regulator threw fuel into the tank, then it must be replaced.

Ignition system

Here it is necessary to check whether the ignition timing is set correctly. Sometimes, if the machine does not pull, the reasons can be precisely this. It is also necessary to check the state of the candles and the high voltage wiring. For more details on how to perform the test, you can read the instructions to the specific engine. The main thing here, in troubleshooting, is to use not only your experience. It is also important to analyze similar situations on other cars.

Air flow and pressure sensor

These two elements determine how much air is consumed by the engine, as well as how much air is needed to create the optimum fuel-air mixture. If these sensors fail, then the computer will incorrectly make calculations and, accordingly, the traction may drop. If the machine does not pull, the reasons (VAZ-2110 injector including) may be in these sensors. If necessary, they should be replaced, and then the power will return.

But if the car has an ECU, then why does not the corresponding bug on the dashboard burn? The electronic control unit is programmed for an open or short circuit. If this is not the case, and the sensor simply does not work as it should, the computer will be able to report that the wrong mixture preparation process is in progress. If the machine pulls badly, there may be other causes, but the sensor should be checked. The source of the sensor's malfunctioning will have to be searched for independently. You can see the parameters of a particular element in the instruction.

Belt or timing chain

The crankshaft and the shaft of the gas distribution mechanism must rotate together and simultaneously synchronously. To do this, apply straps. Here you just need to combine the tags that are on the chains, belts and gears. It happens that the belt can jump to another tooth. Chains have the property of stretching. However, if these mechanisms are properly serviced on time, this reason can be excluded.

Exhaust system check

The device of the modern engine is quite complicated. Manufacturers make them so that cars do not pollute the environment. Or if polluted, it is minimal.

So, one of the devices that affect the purification of exhaust gases is a catalyst. It can be located in different places. If it is in your car, then with the regular use of low-quality fuel, which is sold in large numbers at most of our gas stations, the catalyst may become unusable. But it not only collapses, but can also block the normal exit of exhaust gases. As a result, the machine does not pull uphill. The reasons - including the clogged catalyst.

To check the catalyst, remote thermometers must be used. You can also test its performance on the pressure in front of the device and after it. If all these options are not available, then you have to dismantle the device and evaluate its status visually. If the catalyst is clogged, replace it or replace it with a flame arrester.

Compression

If the machine does not pull, the reasons can be in compression. The compressor will be required for testing. It is better if it is equipped with a manometer with good accuracy. During operation of the motor, the piston rings are grinded. As a result, the compression in the cylinders decreases or disappears altogether. If the valves of the gas distribution mechanism are not too tightly installed in their seats, then the test will show poor results.

To identify the cause of poor compression, after the measurement is completed, add oil to the cylinder, and then again measure. If the level is slightly increased, then it is necessary to change the piston rings. If you are unlucky and the compression remains the same, then the valves will be replaced. If the machine does not pull, the reasons (VAZ-2109 is not an exception) can be just that.

Before you measure the compression, you should charge the battery well. Otherwise, you will not get correct indicators. Compressometer screw in place of candles. This is much better than using a rubber seal. Perhaps, if the machine does not pull, the reasons for low compression.

Check the transmission

Sometimes the power unit can develop serious power, but it does not reach the wheels. If during the ride you hear that the motor is working hard, and the speed does not feel, then, perhaps, the automatic transmission system is stalled or there are blockages from the brakes.

To check, it is necessary to go to a straight line, set the selector to the D position, and then see how the machine behaves. If the speed decreases, then the brake system must be diagnosed. If the brakes are all right, you need to go to a good service station and check the automatic transmission.

You can also check the parking brake. To do this, go to the free space. Warm up the machine, and then pull the handbrake. Then press the brake pedal, and set the box selector to D. Then push the accelerator. If the engine keeps the revs around 2000, then it's all right. If less or more, you should go to the SRT to test the automatic transmission.

Why does not the machine pull: causes (carburetor)

If the thrust of such an engine is lost, the fuel pump connection may be dirty or the system may have a low pressure. It is also possible that the carburetor is simply contaminated or there are some problems with the needle valve. Errors or incorrect adjustment of the composition of the fuel mixture are possible. If the carburettor flap is not open enough, traction may be lost. When the fuel level in the engine is reduced, the thrust also disappears. When there are any problems with traction in the engine, it is necessary to urgently conduct a full diagnosis. It is necessary to find out why the machine is badly pulled, the reasons we have already considered. If a fault is found, immediately remove it. If you could not find the reason for reducing the thrust yourself, do not hesitate. It is necessary to conduct a deeper examination in the SRT. But basically the cause still can be identified and eliminated on its own.

So, we found out why the car is losing traction.