What Causes Engine Idle Shaking but No Shaking When Accelerating?

[MicahDella]

Engine idle shaking but no shaking when accelerating is caused by: 1. Changes in fuel injection quantity, leading to fluctuating engine speeds; 2. Malfunction in the fuel pump pressure regulator or sensor causing incorrect fuel injection correction signals; 3. Cracked vacuum booster pipe; 4. Carbon buildup or dirt on the throttle body, or incorrect positioning of the throttle position sensor. Extended content: An engine (Engine) is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. The engine can refer to both the power generation device and the entire machine including the power unit.