Symptoms
Pedal hard with poor stopping power, hissing when braking.
Likely cause
Failed servo diaphragm, split vacuum hose or failed vacuum pump on diesels.
Suggested fixes
Listed roughly in the order most owners try them.
- 1
Check the vacuum hose and pump
Check vacuum at the servo. Diesels rely on a vacuum pump.
- Difficulty:
- Easy DIY
- Cost:
- £ (Under about £50 in parts)
- 2
Replace the servo
Fit a new or reconditioned servo and bleed brakes.
- Difficulty:
- Moderate DIY
- Cost:
- ££ (About £50 to £300)
This is general guidance gathered from owner experience and workshop practice, not a substitute for a workshop manual or a qualified mechanic. Costs are rough parts-only guides. Brakes, steering and suspension work affects safety, so if in doubt have it checked professionally.
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