What are the causes of engine vibration?

[StevenRose]

Engine vibration can be caused by: 1. Damaged spark plugs, where the wear of the spark plug electrode gap leads to insufficient spark ignition, resulting in incomplete combustion of the air-fuel mixture; 2. Poor quality gasoline, which affects the atomization effect of the fuel injector, leading to incomplete combustion of the mixture in the cylinder; 3. Dirty throttle body or excessive carbon buildup in the fuel injector; 4. Abnormal fuel pump pressure or incorrect readings and poor performance of the intake pressure sensor. An engine is a machine that converts other forms of energy into mechanical energy, first developed in the UK. It can refer to either the power generation device or the entire machine including the power unit. Types of engines include internal combustion engines, external combustion engines, and electric motors. Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines, which convert the chemical energy of fuel into the mechanical energy of piston movement to generate power.