What Causes the Zizzing Sound When Starting the Car Engine?
2 Answers
The reasons for the zizzing sound when starting the car engine: 1. Check the tightness of the belt. If the car belt is loose, it will produce a zizzing sound, and you should take it to a repair shop for inspection; 2. If the car has not been used for a while, the engine oil will return to the oil pan, and the valve chamber will lack oil. Without the sealing and lubrication of the oil, you will hear a zizzing sound when starting the car. The engine is a machine that converts other forms of energy into mechanical energy. It was invented in the UK and can refer to both the power generation device and the entire machine including the power device. Types of engines include internal combustion engines (such as gasoline engines), external combustion engines (such as Stirling engines and steam engines), and electric motors.
A buzzing sound when starting the car engine can be caused by several factors, such as belt slippage or looseness. The most common is the alternator belt rubbing back and forth, producing that squeaking noise; if the belt is aged or cracked, it can be particularly noticeable under the high load of startup. Alternatively, the starter may have issues, such as worn internal gears or brush problems, causing uneven current flow. I once experienced this sound and later found the belt wasn’t tensioned properly—adjusting it fixed the issue. Low battery voltage can also strain the starter, creating similar noises. In short, don’t ignore it; get it checked early to avoid worsening into starter damage or breakdown. It’s best to have a trusted technician inspect the electrical system.
