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What’s the matter with abnormal brake noise when starting a cold car

Blog 10个月前 (07-07) 66 Views

This problem is likely to occur if the brake is released slowly when starting. The engine has enough power to drive the car forward. When the brake pedal is slowly released, but the brake has not been fully released, then the wheels that are being held by the brake system will naturally produce this abnormal sound.

  

The rattling sound is due to a cold start in the morning or a restart of a car that has been parked for a long time, or it may be due to worn hydraulic tappets or pressure relief systems. Generally, it is not a big problem. If the sound disappears quickly or after the engine temperature is raised, it can continue to be used; if it is stopped for half an hour and then starts to make an abnormal sound, or the sound also occurs when the vehicle is warming up If so, the problem is more serious. First of all, it is necessary to measure the pressure of the lubrication system at this time. If the pressure is normal, the basic fault is the hydraulic tappet. Brake discs and brake pads, which are high-consumable products, will rub against each other every time they brake. Naturally, they will be worn out for a long time, and abnormal noises will naturally appear when they are excessively worn, so regular inspections and replacements are required. Usually, the replacement of brake pads is a cycle of 60,000-80,000 kilometers, while the life of brake discs is 100,000-120,000 kilometers.