Why after replacing the “brake” and pumping the system, the behavior of the car changes
January 16, 2023
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Often after changing the brake fluid, the car starts to behave in a strange way. If earlier the brakes “grabbed” at the beginning of the pedal stroke, now
Often after changing the brake fluid, the car starts to behave in a strange way. If earlier the brakes “grabbed” at the beginning of the pedal stroke, now their effective work begins closer to the center. What could be the reason, the AvtoVzglyad portal understood.
Usually they say that air got into the tubes. But in this case, the main control of the “iron horse” is quilted, and if you unscrew the fittings, you can see how the bells come out. However, with our “diagnosis” there are no critical deviations: the fluid does not leave the system, and checking the delay on a special stand does not cause any concern. Everything seems to be normal, but not as familiar as before.
The first reason is that a small amount of oxygen can get into the ABS unit and “vent” it. To expel unnecessary gas from there, it is necessary to stop “on the floor” several times. Do you hear the system beeping? Excellent. Then we’re going to step on the brakes again. The problem should be gone. Here we remind once again that all maneuvers must be performed on an empty road where there are no cars. Otherwise, problems may arise, including emergencies.
You should also keep in mind that the “brake” is hygroscopic. That is, over time, it gains moisture. It is at the pedal that the so-called free play decreases. This happens if the fluid has not been changed for a long time. And in the cold, the water generally crystallizes. The result – the “cars” sharply “grab”, you just need to “stroke” the pedal pad with your foot. The driver gets used to driving like this for years, and after filling a new consumable, it seems to him that it has become worse. In fact, the pistons just started to sink better and the “retarders” now work more smoothly.
In the end, we notice that similar symptoms sometimes occur because the rubber of the brake hoses has swollen. This happens either from old age, or from road agents, which ruthlessly “attack” the lower part of the car. The same effect is given by torn cords from even one of the snakes. Here we note that the latter is done only with low-quality spare parts. Do not skimp on them when buying.
Photo: Drive2.ru (ShustriK2010)
Usually they say that air got into the tubes. But in this case, the main control of the “iron horse” is quilted, and if you unscrew the fittings, you can see how the bells come out. However, with our “diagnosis” there are no critical deviations: the fluid does not leave the system, and checking the delay on a special stand does not cause any concern. Everything seems to be normal, but not as familiar as before.
The first reason is that a small amount of oxygen can get into the ABS unit and “vent” it. To expel unnecessary gas from there, it is necessary to stop “on the floor” several times. Do you hear the system beeping? Excellent. Then we’re going to step on the brakes again. The problem should be gone. Here we remind once again that all maneuvers must be performed on an empty road where there are no cars. Otherwise, problems may arise, including emergencies.
You should also keep in mind that the “brake” is hygroscopic. That is, over time, it gains moisture. It is at the pedal that the so-called free play decreases. This happens if the fluid has not been changed for a long time. And in the cold, the water generally crystallizes. The result – the “cars” sharply “grab”, you just need to “stroke” the pedal pad with your foot. The driver gets used to driving like this for years, and after filling a new consumable, it seems to him that it has become worse. In fact, the pistons just started to sink better and the “retarders” now work more smoothly.
In the end, we notice that similar symptoms sometimes occur because the rubber of the brake hoses has swollen. This happens either from old age, or from road agents, which ruthlessly “attack” the lower part of the car. The same effect is given by torn cords from even one of the snakes. Here we note that the latter is done only with low-quality spare parts. Do not skimp on them when buying.
Donald Salinas is an experienced automobile journalist and writer for Div Bracket. He brings his readers the latest news and developments from the world of automobiles, offering a unique and knowledgeable perspective on the latest trends and innovations in the automotive industry.