Fuel Injectors — Audi Q7
Category: Engine | Severity: medium | Cost: ₹8,000–₹30,000
What is Fuel Injectors?
Fuel injectors deliver precise amounts of fuel into the combustion chamber in atomized form.
How Fuel Injectors Works
Controlled by the ECU, injectors spray fuel at high pressure for efficient combustion.
Why is Fuel Injectors Important?
Ensures proper fuel-air mixture for power, efficiency, and emissions control.
Common Problems
- Clogging
- Leakage
- Injector failure
Symptoms
- Engine misfire
- Poor mileage
- Black smoke
Causes of Failure
- Dirty fuel
- Carbon deposits
- Wear and tear
Impact on Car Performance
Faulty injectors reduce power and increase fuel consumption.
DIY Fix Guide — Step by Step
- Use fuel injector cleaner
- Refuel from trusted stations
- Check for engine misfire
- Scan ECU for errors
- Replace if faulty
Maintenance Tips
- Use high-quality fuel
- Periodic injector cleaning
Replacement Cost in India
Estimated range: ₹8,000 – ₹30,000
Where to Buy Online
When to Replace Fuel Injectors
Replace if clogged or leaking beyond repair.