Solutions to the problem of used car noise
Body noise It is caused by normal perennial use, and is caused by the relaxation of certain parts. At the same time, noise is related to speed. This is a resonance problem. Other non-listed noises need to be noticed and eliminated in time, such as noise in the steering system (affecting safety), noise in the electrical appliances, etc. Brake system noise If the brake pads are used after normal wear, the brake shoes will easily wear out to the brake disc (ie, iron will hit the iron), and a very harsh squeak will appear when the brakes are applied. The solution is to replace the brake pads (the brake discs should be replaced if they are worn out). Exhaust pipe noise It belongs to the category of normal aging. Exhaust pipes of 10 years or 200,000 kilometers are often exposed to noise because the bottom of the exhaust pipe is often exposed to mud and water and other acid-alkali mixtures, or there is a possibility of leakage due to corrosion. come out. The solution is to replace the entire exhaust pipe or part of the exhaust pipe, and the noise can be eliminated immediately. Engine and accessories noise This is due to the normal wear of components inside the engine due to aging. If there has been an unusual accident before, such as once leaked oil, it has not been found in time or once leaked antifreeze. Engines that experience this type of experience will have more noise, and the amount of noise varies depending on the size of the accident. The solution is to replace some or all of the engine moving parts such as connecting rods, connecting rods, pistons and piston rings. There are also some belts attached to accessories such as engines that are improperly installed or worn for years. Suspension system noise Although this is a normal ageing category, different users will have significantly different results. A large part of this is the wear of wheel hub bearings or the reduction in damping capacity of the shock absorber in the shock absorber. There are also many examples of shock absorber leakage. Because the damping performance of the car is achieved by the shock absorber fluid and the spring, the loss of the damping fluid capacity will significantly increase the noise. The solution is to repair the car, replace the hub bearings or shock absorbers.
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