Why Does the Car Squeak When Starting?
2 Answers
Car squeaking upon startup is typically due to a loose or abnormal timing belt. When the engine operates at high temperatures, incorrect matching or installation of the timing belt tensioner can affect the belt's service life. Whether starting the car in cold or normal temperatures, any squeaking noise should prompt immediate replacement of the timing belt. The timing belt is a crucial component of the engine system, connecting to the crankshaft and maintaining a specific gear ratio to ensure proper engine intake and exhaust timing, thereby guaranteeing normal engine operation. The reason cars use belts for transmission instead of gears is that belts produce less noise and offer precise transmission.