Crankshaft — Audi Q7
Category: Engine | Severity: high | Cost: ₹50,000–₹1,50,000
What is Crankshaft?
The crankshaft converts the linear motion of pistons into rotational motion to drive the vehicle.
How Crankshaft Works
As pistons move up and down, the crankshaft rotates, transferring power to the transmission.
Why is Crankshaft Important?
It is essential for converting combustion energy into usable mechanical power.
Common Problems
- Bearing wear
- Crankshaft bending
- Oil starvation damage
Symptoms
- Engine knocking
- Low oil pressure
- Vibration
Causes of Failure
- Poor lubrication
- High mileage
- Contaminated oil
Impact on Car Performance
Failure can stop the engine completely.
DIY Fix Guide — Step by Step
- Check engine oil regularly
- Listen for knocking sounds
- Avoid driving with low oil
- Service engine on time
- Inspect bearings periodically
Maintenance Tips
- Use high-quality engine oil
- Regular oil changes
Replacement Cost in India
Estimated range: ₹50,000 – ₹1,50,000
Where to Buy Online
When to Replace Crankshaft
Replace if severely worn or damaged.