Why does the Ford Focus clutch draw in air?

[CamilleRose]

Ford Focus clutch draws in air due to clutch slave cylinder failure or pipeline damage. Below is an introduction to the symptoms of clutch damage: 1. Clutch slippage. When starting the car in low gear, after releasing the clutch pedal, the car cannot start or has difficulty starting; during acceleration, the vehicle speed cannot increase with the engine speed, resulting in a feeling of weak driving, and in severe cases, causing phenomena such as burnt odor or smoke. 2. Incomplete clutch disengagement. Even when the clutch pedal is fully depressed, the power between the clutch's driving and driven discs cannot be completely cut off, leading to difficulty in shifting gears, gear grinding, or inability to stop, as well as clutch overheating. 3. Clutch shudder. The entire vehicle shakes during startup, especially at idle speed when gradually releasing the clutch pedal in low gear, causing continuous jerking. 4. Abnormal clutch noise. When the clutch pedal is slightly depressed, as the inner end face of the release bearing just contacts the release lever, the clutch emits a continuous "scratch, scratch, scratch" sound; noise occurs during engagement at startup or separation while driving, accompanied by shaking.