What is the reason for the delayed acceleration when stepping on the gas pedal, followed by a sudden speed increase after a few seconds?

[OLondyn]

Here are the reasons for the delayed acceleration when stepping on the gas pedal: 1. Carbon deposit issues: These include carbon deposits in the cylinders, throttle valve, spark plugs, and intake system. These components 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, and ultimately, the engine's power is reduced, resulting in sluggish acceleration and a muffled sound. 2. Fuel system issues: Using an incompatible fuel grade can lead to a decrease in the car's output power and reduced performance. Alternatively, if the fuel tank vent is blocked, or if the fuel tank switch, fuel filter, or fuel lines between the tank and carburetor are partially clogged, the required fuel supply cannot be met, leading to a lean air-fuel mixture and weak engine acceleration. 3. Intake system issues: Air is one of the engine's power sources. If the air filter is not cleaned in time after long-term use and becomes clogged, insufficient air intake will result in an overly rich air-fuel mixture, causing a drop in engine power.