- Brake master cylinder. Damage/scratches/wear → Replace.
- Brake fluid delivery passages (brake master cylinder body). Obstruction → Blow out with compressed air.
2. Check:
- Brake master cylinder kit. Damage/scratches/wear → Replace.
3. Check:
- Brake fluid reservoir. Cracks/damage → Replace.
- Brake fluid reservoir diaphragm. Cracks/damage → Replace.
4. Check:
- Brake hose. Cracks/damage/wear → Replace.