Purge Valve — Nissan Gravite
Category: Fuel System | Severity: medium | Cost: ₹1,500–₹5,000
What is Purge Valve?
Controls the flow of fuel vapors from charcoal canister to engine.
How Purge Valve Works
Electronically controlled valve opens to allow vapors into intake manifold.
Why is Purge Valve Important?
Ensures proper vapor combustion and emission control.
Common Problems
- Valve stuck open/closed
- Electrical failure
Symptoms
- Rough idle
- Hard starting
- Fuel smell
Causes of Failure
- Wear and tear
- Carbon buildup
Impact on Car Performance
Improper vapor flow affects combustion efficiency.
DIY Fix Guide — Step by Step
- Check electrical connections
- Test valve operation
- Replace if faulty
Maintenance Tips
- Regular diagnostics scan
Replacement Cost in India
Estimated range: ₹1,500 – ₹5,000
Where to Buy Online
When to Replace Purge Valve
Replace when valve is stuck or malfunctioning.