What Causes the Sizzling Sound When Driving?
2 Answers
The sizzling sound after starting the car is most likely due to an issue with the engine belt. It is necessary to check the tension of the engine belt. You can try pinching the drive belt with your fingers and then twisting it. Note that this operation should be performed when the engine is cool, and the twist angle should generally be less than 90 degrees; otherwise, adjustment is needed. Below is information about the belt: 1. Introduction: The car's timing belt is responsible for the opening timing of the valves. If the valve opening is disordered, it will "top the cylinder," causing the engine to fail instantly. Once the timing belt breaks, the engine will fail immediately, so the timing belt must be replaced regularly. The belts on the engine include the timing belt and the water pump belt. Timing mechanisms can use either belts or chains, with chains being maintenance-free and not requiring attention during the vehicle's service life! Belts, as rubber components, will age and need replacement, generally between 50,000 to 120,000 kilometers. 2. Replacement: If the timing belt reaches the manufacturer's recommended replacement mileage, it is strongly advised to replace it, as a broken timing belt can cause the camshaft to damage the valves, leading to expensive repairs. The water pump belt's replacement mileage is usually 50,000 kilometers. If there is a squeaking sound during startup or acceleration, it is often due to insufficient tension in the water pump belt. If the aging is not severe, adjusting the tension can solve the issue, allowing continued use. If the water pump belt is not severely aged, it can still be used even beyond the manufacturer's specified mileage, but replacement may be necessary depending on the situation.
As a seasoned driver with years of experience, I've encountered quite a few instances of squeaking noises. The most common issue is loose or worn-out belts, which sound like a taut rope rubbing, especially noticeable during acceleration. The belt connects the engine to various components, and if it's loose, you should promptly check the tensioner or replace the belt, otherwise it could affect the air conditioning or charging system. Additionally, tire issues like uneven tire pressure or tread wear can also produce a squeaking sound, particularly when turning, which is a matter of driving safety—I recommend regular tire inspections. Other possibilities include worn brake pads, which can create a metallic squeaking noise during braking, and delaying repairs can reduce braking effectiveness. Older cars often develop noises due to aging wiring in the engine compartment causing electrical leaks. In short, don't ignore these small sounds—they're often early warnings of bigger problems. Getting a professional inspection at a repair shop is the safest bet and can save you a lot of trouble and money.
