What causes the 40-shake to exceed non-shake?

[VanLayla]

40-shake exceeding non-shake is caused by carbon deposits in the engine throttle intake pipe combustion chamber, ignition system malfunctions, and other reasons. Below are specific details: 1. Causes: Carbon deposits in the engine throttle intake pipe combustion chamber, forgetting to release the handbrake, insufficient engine oil, poor-quality engine oil, excessive spark plug gap, insufficient tire pressure causing imbalance, aging engine components. 2. Solutions: Severe engine carbon deposits require cleaning the fuel system; check if the idle control valve has carbon deposits and clean it thoroughly. If the ignition system malfunctions, check if the spark plugs have excessive carbon deposits and replace them if necessary. Unstable oil pressure requires checking the oil pressure and replacing components if needed. For aging engine components, replace them.