Valve Cover Gasket and Oil Leak Issues
ModerateEngineThe N74 V12 engine's valve cover gaskets deteriorate with age, causing oil leaks that can drip onto the exhaust manifold and create a burning oil smell. In severe cases, oil can contaminate spark plugs causing misfires.
Est. Repair Cost: £1,500–£3,000
Warning Signs:
Burning oil smell after driving, Oil visible on the sides of the engine, Misfires or rough idle, Oil dripping on the garage floor
What to Inspect:
- Inspect the sides of the V12 engine for oil residue
- Check for burning oil smell when the engine is hot
- Look for oil contamination around spark plug wells
Verified by IsItAGoodCar Research Team