Symptoms
Engine dies after running a while, hard starting after standing, bubbles in the clear fuel line.
Likely cause
Worn lift pump diaphragm, perished fuel hoses, or a loose fuel filter seal letting air in.
Suggested fixes
Listed roughly in the order most owners try them.
- 1
Replace the mechanical lift pump
If the priming lever is weak, the diaphragm is worn.
- Difficulty:
- Easy DIY
- Cost:
- £ (Under about £50 in parts)
- 2
Renew fuel hoses and filter seals
Replace all rubber fuel hoses and fit a new filter with fresh seals.
- Difficulty:
- Easy DIY
- Cost:
- £ (Under about £50 in parts)
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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