What Causes the Clicking Sound When Starting the Car?
1 Answers
The possible reasons for abnormal noise when starting the car are as follows: 1. Hydraulic lifters: Due to low oil pressure or wear of the hydraulic lifters themselves, air enters the hydraulic lifters, causing abnormal noise. 2. Valve clearance: Wear of the valve rocker arms leads to excessive valve clearance. 3. Dirty throttle body: Continuous accumulation of sludge and carbon deposits causes the throttle body to become dirty, resulting in internal blockage and abnormal noise during startup. 4. Aging of certain parts in the car chassis: Aging of certain parts in the car chassis often causes a clicking sound when starting the car, which is a normal phenomenon. 5. Rust in the car's braking system: If the car is parked in humid and rainy areas for a long time, the brake discs may gradually rust due to such weather. In areas with heavy rainfall, the brake discs are more prone to oxidation and rust, making it easy for the braking system to produce a clicking sound when starting the car.