Why is the clutch getting heavier?

[CooperLynn]

There are several reasons why a car's clutch may become increasingly heavy: 1. When the clutch pedal is released, it should return quickly and accurately to its standby position. A return spring is typically designed at the pedal. If the heavy pedal phenomenon occurs after replacing the spring, it is likely that the clutch pedal return spring has too much tension. 2. Many car clutches use an assist system, which normally makes operation easier. However, if the clutch assist cylinder fails, it may result in insufficient assistance, ultimately causing the clutch pedal to feel very heavy when pressed. 3. Most of the power driving the clutch booster comes from the compressed air in the air reservoir. If the pressure of the compressed air leading to the booster is too low, it can cause insufficient assistance. Therefore, when such a fault occurs, the compressed air pressure to the clutch booster should be checked first.