Quick answer
Engine Carbon Cleaning: the most common causes are carbon deposits on gdi/fsi intake valves from oil vapour, combustion chamber deposits causing hot spots and detonation, egr carbon buildup causing rough idle and loss of power. Metre Per Second (KPHB, Hyderabad) diagnoses the exact fault and repairs it same-day — typical work runs ₹1,500 – ₹3,000, with free pickup and drop across Hyderabad, OEM-grade parts and a 1-year warranty. Call +91 8555824915.
What causes Engine Carbon Cleaning?
These are the faults we most often find behind this symptom on cars driven in Hyderabad's heat and stop-go traffic:
- Carbon deposits on GDI/FSI intake valves from oil vapour (no fuel wash on ports)
- Combustion chamber deposits causing hot spots and detonation
- EGR carbon buildup causing rough idle and loss of power
- Throttle body carbon accumulation from long city traffic exposure
- Intake manifold carbon reducing airflow in older high-mileage engines
Repairs & indicative pricing (INR)
| Repair | Indicative price |
|---|---|
| Throttle body carbon clean | ₹1,500 – ₹3,000 |
| Intake manifold decoke (chemical) | ₹3,000 – ₹6,000 |
| GDI walnut shell intake blast | ₹5,000 – ₹12,000 |
| Hydrogen carbon clean (HHO) | ₹3,000 – ₹6,000 |
| EGR and intake valve clean | ₹5,000 – ₹10,000 |
Final price depends on diagnosis. We share a written estimate before any work — no surprises. Free pickup & drop across Hyderabad, OEM-grade parts and a 1-year warranty.
Frequently asked questions
Which cars in Hyderabad need walnut blast intake cleaning?
GDI (Gasoline Direct Injection) engines need walnut blast cleaning — specifically VW/Skoda TSI engines, Hyundai GDI engines (i20, Creta, Verna), Toyota D-4S engines, BMW N20/N55, and Mercedes M270/M274. Unlike port-injected engines, GDI engines never wash fuel over the intake valves, so carbon accumulates rapidly. In Hyderabad's city traffic, GDI carbon buildup can become significant by 50,000–80,000 km.
Related car problems we fix in Hyderabad
Why Hyderabad drivers choose Metre Per Second
- Factory-grade diagnostics — we read the real fault, not just a generic code.
- Free pickup & drop across all of Hyderabad — KPHB, Kukatpally, Miyapur, Hitech City, Gachibowli, Banjara Hills, Secunderabad and more.
- 1-year unconditional warranty on parts and labour.
- Transparent, written estimates — typically 30–50% below authorised dealers.