Mercedes CLS Fuel Injector Fault Repair in Hyderabad | GarageNation

Is your Mercedes CLS showing signs of fuel injector fault? GarageNation specialises in diagnosing and repairing this problem on the Mercedes CLS (Coupe, Petrol) in Hyderabad. Urgency: Soon. Book within the next 1–2 weeks before the problem worsens. Estimated repair cost: ₹8,000 – ₹60,000.

Symptoms of Fuel Injector Fault in Mercedes CLS

• Rough running and misfires — P0200–P0204 fault codes for injector circuit
• Hard starting, especially cold start on diesel engines
• Black smoke from exhaust on diesel — over-fuelling injector
• Drop in fuel economy from poor atomisation
• Knock or tick from engine at idle (diesel injector noise)

Why Mercedes CLS Is Prone to Fuel Injector Fault

The Mercedes CLS uses a 2.0 M264 petrol EQ Boost (258 bhp CLS300) and is classified as a coupe. Based on our workshop experience with Mercedes CLS in Hyderabad: M264 timing chain tensioner fault at 60,000 km. Mercedes CLS models are among the brands we see most frequently for fuel injector fault repairs.

Top Causes of Fuel Injector Fault in Mercedes CLS

• Carbon deposit on injector tip reducing spray pattern quality
• Injector back-leak on diesel common-rail injectors from worn sealing faces
• Clogged injector filter basket from contaminated fuel
• Injector solenoid or piezo actuator failure
• Incorrect injector coding after replacement (must be re-coded with OEM tool)

How We Diagnose Fuel Injector Fault on Mercedes CLS

• Injector balance test — contribution test showing relative injector output
• Back-leak test on diesel injectors — excess back-leak confirms worn sealing
• Injector coding check — all four codes should be programmed in ECU
• Fuel pressure rail sensor live data during start-up cranking

Prevention

Use quality fuel from reputable pumps and add injector cleaner every 30,000 km in petrol cars.

Frequently Asked Questions