Why does the car brake make a water-like sound?

[VanJosiah]

Here are the reasons why the car brake makes a water-like sound: 1. Reason one: The sound of circulating water from the water pump, which is a normal phenomenon. 2. Reason two: Water accumulation inside the door, caused by clogged drainage holes in the door, preventing the water from draining out. The solution is to clean the drainage holes. 3. Reason three: Some car brands have a heater core inside the vehicle. When the antifreeze is low, a water-flowing sound may occur. The solution is to add antifreeze. 4. Reason four: Air leakage from the vacuum booster pump. The solution is to replace the vacuum booster pump. 5. Reason five: Water entering the side rails. The solution is to unclog the drainage holes under the side rails or remove the lower guard plate to take out the original blocked drainage outlet. 6. Fuel sloshing in the fuel tank: Some car fuel tanks do not have baffles installed, so when the car starts or brakes suddenly, the fuel may slosh due to inertia and produce a sound. Specific situations require inspection and repair at a 4S shop or repair shop.