🚗 Classic Fault — Jaguar XJ6 (1968–1992)
Jaguar XJ6 XK engine oil consumption — worn valve guides
💰 Estimated Repair Cost
$200 – $800 GBP
Parts and labour estimate
🔧 Tools Required
Valve guide tools, head removal
📋 Overview
High-mileage XK engines wear valve guides and produce characteristic blue smoke on startup and overrun.
🩺 Symptoms
- Blue smoke on cold start
- blue smoke on overrun
- oil consumption 500ml per 500 miles
🔍 Possible Causes
- Worn valve guides
- worn valve stem seals
- worn piston rings
🛠️ Diagnosis Steps
Blue smoke on startup and overrun = valve guides. Blue smoke constant = rings. Compression test to differentiate.
✅ Most Confirmed Fix
Head off for valve guide and seal replacement
78% of users confirm this fix worked (18 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.