Why is the car lacking power during acceleration?

[LeMarcus]

Here are the reasons why a car may lack power during acceleration: 1. Ignition system malfunction, such as aging ignition coils or spark plugs that haven't been replaced for a long time, leading to insufficient ignition energy, poor combustion, weak engine acceleration, and the engine warning light coming on; 2. Fuel system failure causing excessively low pressure. Insufficient fuel injection can result in weak engine acceleration; 3. Excessive carbon buildup in the engine, leading to poor fuel atomization, which similarly causes poor combustion, excessive exhaust emissions, and weak engine acceleration; 4. Engine system malfunction, causing the engine to enter an emergency operating mode, thereby limiting engine power output and resulting in weak acceleration. Examples include engine sensor failures, such as oxygen sensors, air flow meters, crankshaft position sensors, knock sensors, etc. Signal faults from these sensors can cause the engine to enter an emergency operating mode, leading to weak acceleration.