Is It Normal for the Engine to Shake When Revving in Neutral?

1 Answers
OClayton
07/25/25 7:48am
Revving the engine in neutral is not normal and indicates a problem with the car's engine, which requires immediate inspection. Revving the engine in neutral places a significant load on the engine, and the inertia generated is also considerable. This greatly affects the engine's reliability and service life. When the car is in neutral, the engine has no power output. In this situation, revving the throttle causes the engine speed to rise abruptly. During high-speed operation, components such as pistons and connecting rods also accelerate, imposing a substantial load on the engine. Additionally, since the engine speed increases sharply when revving in neutral, the friction coefficient of various parts increases, and lubrication cannot keep up. This can easily lead to engine cylinder scuffing. Therefore, it is advisable to avoid revving the engine in neutral during daily use.
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