Exhaust Manifold — Nissan Gravite
Category: Exhaust | Severity: high | Cost: ₹8,000–₹25,000
What is Exhaust Manifold?
Collects exhaust gases from engine cylinders and directs them into the exhaust system.
How Exhaust Manifold Works
The manifold channels hot exhaust gases through a single outlet, maintaining flow efficiency and reducing backpressure.
Why is Exhaust Manifold Important?
Critical for engine efficiency, emission control, and proper exhaust flow.
Common Problems
- Cracks
- Leaks
- Warping
- Loose bolts
Symptoms
- Loud engine noise
- Reduced power
- Exhaust smell
- Engine misfire
Causes of Failure
- Thermal stress
- Poor material quality
- Improper installation
Impact on Car Performance
A damaged manifold can reduce engine efficiency by 15–20%.
DIY Fix Guide — Step by Step
- Inspect for cracks or leaks
- Tighten mounting bolts
- Replace gasket if leaking
- Replace manifold if severely damaged
Maintenance Tips
- Check for leaks regularly
- Avoid overheating
- Ensure proper torque on bolts
Replacement Cost in India
Estimated range: ₹8,000 – ₹25,000
Where to Buy Online
When to Replace Exhaust Manifold
Replace if cracked, leaking, or warped.