What Causes Poor Acceleration, Jerking Sensation, and High Fuel Consumption in Cars?

[DeMicah]

Car acceleration is weak, with a jerking sensation and high fuel consumption for the following reasons: Carbon buildup in the car: Carbon deposits include cylinder carbon buildup, throttle carbon buildup, spark plug carbon buildup, intake carbon buildup, etc. These areas are directly related to the engine's power output. When there is excessive carbon buildup inside the engine, the car's ignition energy decreases, intake efficiency drops, ultimately leading to reduced engine power and symptoms like shaking and poor acceleration. Fuel system malfunction: Using an incompatible fuel grade can cause the car's output power to drop and reduce its performance. Alternatively, if the fuel tank vent is blocked, it may fail to meet the required fuel supply, resulting in an overly lean air-fuel mixture and weak engine acceleration.