Head Gasket — Audi Q7
Category: Engine | Severity: high | Cost: ₹25,000–₹80,000
What is Head Gasket?
The head gasket seals the cylinder head to the engine block to prevent leakage of gases, oil, and coolant.
How Head Gasket Works
It maintains compression and separates oil and coolant channels between the head and block.
Why is Head Gasket Important?
Essential for maintaining engine compression and preventing leaks.
Common Problems
- Gasket blow
- Coolant leakage
- Oil contamination
Symptoms
- White smoke
- Overheating
- Milky engine oil
Causes of Failure
- Overheating
- Poor installation
- Age
Impact on Car Performance
Failure leads to severe engine damage.
DIY Fix Guide — Step by Step
- Check for white exhaust smoke
- Inspect coolant levels
- Look for oil contamination
- Avoid overheating
- Seek professional repair
Maintenance Tips
- Maintain cooling system
- Avoid overheating
Replacement Cost in India
Estimated range: ₹25,000 – ₹80,000
Where to Buy Online
When to Replace Head Gasket
Replace immediately if blown.