How to Determine if Your Car Has Excessive Carbon Buildup?

[LeAliyah]

While driving, accelerate and observe the driving sensation of the car. If the vehicle shakes and produces a muffled sound, this indicates excessive carbon buildup inside the engine, causing an uneven fuel supply process. In the first few years after purchasing the car, the fuel consumption was normal, but later it began to gradually increase. If the vehicle's fuel consumption continues to rise, it is likely due to carbon buildup.