The sound of stepping on the throttle is like a sports car, and the sound of stepping on the throttle engine is very loud.

The main reasons are engine cylinder shortage, air intake system blockage or poor gasoline quality.

Engine cylinder missing: Due to the aging and damage of the spark plug or ignition coil in the ignition system, a certain cylinder may not work when stepping on the accelerator.

Air intake system is blocked: if the throttle valve is not cleaned for a long time, there will be carbon deposit and sludge, which will hinder the opening of the throttle valve, resulting in less air entering the engine and diluted combustible mixture, resulting in insufficient combustion and rumbling.

Poor gasoline quality: the nozzle or fuel pipeline is blocked, resulting in insufficient fuel injection and combustion, and it will also make a roar.