What Causes Abnormal Noise When Depressing the Car Clutch?
3 Answers
Here are the main reasons for this situation: 1. The clutch pressure plate spring is broken or the release bearing is loose. 2. The clutch disc is cracked. 3. The clutch release lever is broken, excessively worn, or the release lever adjustment bolt is broken. Here is some relevant information about the clutch: 1. Keeping your foot on the clutch pedal for extended periods while driving can easily lead to clutch slippage, clutch disc burning, and in severe cases, even cause the clutch pressure plate and flywheel end face to burn and wear, resulting in issues like the clutch pressure spring losing its temper. 2. When shifting gears while driving, the clutch pedal should be depressed and released quickly, avoiding partial engagement. Otherwise, it will accelerate clutch wear.
I've been driving a taxi for almost twenty years and have encountered clutch noise issues many times. The most common problem is the release bearing failing, which causes squeaking or rattling sounds when you press the pedal, especially in older cars. Sometimes, it's just the clutch linkage or pedal pivot pin lacking lubrication, creating a dry grinding noise—a quick spray of lubricant can fix that. Other times, it's the clutch disc springs becoming loose or broken, resulting in a clicking sound when pressed. For cars with hydraulic systems, leaks in the master or slave cylinder can produce a hissing noise. I recommend addressing it early. Once, a customer ignored it until the car broke down midway, ending up spending over two thousand to replace the entire clutch—totally not worth it. Regular driving habits like avoiding riding the clutch and periodic fluid checks can extend component lifespan.
Last time my car made a creaking sound when pressing the clutch pedal. At first I thought something was stuck under the pedal. After checking myself, I found the rubber bushing underneath had worn out, causing friction noise. Replacing it with a new one only cost 20 yuan. If the noise comes from the engine compartment, it's most likely the release bearing failing - this needs immediate repair as complete bearing failure can contaminate transmission fluid. When the noise is especially noticeable during cold starts but disappears after warming up, it's usually due to fatigued pressure plate springs. For older cars, also check the clutch cable as rust or lack of lubrication can make operation stiff. I recommend recording the abnormal sound for mechanics to diagnose faster - don't waste trips like I did initially.
