What are the reasons why the Hyundai Elantra cannot accelerate when the throttle is pressed hard?

[OVivienne]

The reasons why the Hyundai Elantra cannot accelerate when the throttle is pressed hard are excessive carbon buildup in the engine, ignition system failure, or sensor malfunction. Excessive carbon buildup in the engine: If the vehicle cannot accelerate properly due to excessive carbon buildup in the engine, it is best to take it to a repair shop to check the condition of the carbon deposits. If there is too much carbon buildup, a deep carbon cleaning for the engine is required. Ignition system failure: This issue is usually caused by aging ignition coils or excessive spark plug gap. The spark plugs should be removed and inspected for gap size. If the gap is too large, they need to be replaced promptly. The ignition coils can be checked using a computer to read relevant data or fault codes. If the ignition coils are faulty, they should be replaced with new ones. Sensor malfunction: Use a computer to read the corresponding fault codes. If there is an issue with the sensors, replacing the damaged sensor will resolve the problem.