🚗 Classic Fault — Jaguar XJ6 (1968–1992)
Jaguar XJ6 Series 1/2 fuel evaporation — hot start failure
💰 Estimated Repair Cost
$20 – $100 GBP
Parts and labour estimate
🔧 Tools Required
Heat shielding material
📋 Overview
The XJ6 with twin SU or Stromberg carburettors suffers vapour lock in hot weather, causing hard hot restarts.
🩺 Symptoms
- Engine will not restart when hot
- requires 10+ minutes to cool before starting
- fine from cold
🔍 Possible Causes
- Vapour lock in fuel system
- heat soak in engine bay
- fuel pump location near exhaust
🛠️ Diagnosis Steps
Test with cool damp cloth on fuel pump and lines — if car starts easier, vapour lock confirmed.
✅ Most Confirmed Fix
Fuel line heat shielding and electric pump conversion
79% of users confirm this fix worked (17 reports)
🔗 Other Jaguar XJ6 Faults
Own a Jaguar XJ6?
Share your experience with this fault — or report a different issue. Your knowledge helps other classic car owners worldwide.