Why does the engine shake and the car not move when stepping on the accelerator?
1 Answers
The reasons for the engine shaking and the car not moving when stepping on the accelerator are as follows: Engine misfire: Engine misfire mainly refers to one or more cylinders of the engine not working properly. It is usually manifested as intermittent exhaust gas flow and severe shaking of the exhaust pipe, with noticeable engine vibration, sometimes accompanied by a sputtering sound. This is mostly related to ignition coil failure. Engine mount aging or loosening: Engine mounts are rubber blocks placed between the engine and the frame. Their function is to reduce vibration and buffer the engine's operation and to secure the engine. Once these mounts age or loosen, the engine's vibration will become unusually severe. Replacing the engine mounts can significantly reduce this effect. Carbon buildup issue: Cars inevitably face carbon buildup problems, including carbon deposits in the cylinders, throttle body, spark plugs, and intake system. When there is excessive carbon buildup inside the engine, the ignition energy, intake efficiency, and air-fuel mixture ratio will be affected, leading to unstable power output and shaking during idling and acceleration. It is recommended to have the engine cleaned at a 4S shop. Fuel system failure: Adding incompatible fuel grades can cause a decrease in the car's output power and reduced performance. Alternatively, if the fuel tank cap vent is blocked, or the fuel tank switch, fuel filter, or the fuel line between the tank and the carburetor are partially blocked, the required fuel supply cannot be met, resulting in a lean mixture and engine shaking. It is recommended to use the fuel grade specified by the manufacturer and perform regular maintenance.
