What Causes a Thud Sound from the Chassis When Starting the Car?
1 Answers
Car starting with a thud sound from the chassis is due to the aging of certain components in the car's chassis. After a period of use, the suspension system ages rapidly. Some supporting parts gradually lose their original function, causing the chassis to make a creaking sound when starting the car. Below is an introduction to car maintenance: 1. Exterior Inspection: Before driving, check the doors, hood, trunk, and glass condition. Inspect for body damage, tilting, oil or water leaks, etc. 2. Engine and Various Fluids: Check the fastening of engine components and inspect for oil or water leaks at engine joints. Adjust belt tension and inspect the fastening of pipelines and wiring. Top up engine oil, coolant, and battery electrolyte as needed. 3. Tires: Check tire wear and clean the trunk. Replace tires when they approach the wear indicators. Inspect for bulges, abnormal wear, aging cracks, or hard damage. 4. Cleaning and Lubrication: Clean oil stains from the engine compartment cover, door, and trunk hinge mechanisms, and lubricate them. Antifreeze typically has a service life of 2 years and should be replaced during maintenance, along with a thorough cleaning of the cooling system. Due to the hygroscopic nature of the brake system, brake fluid should be replaced every two years.
