What Causes a Car to Shake During Acceleration?

1 Answers
JeffreyLynn
07/29/25 9:54pm
There are several reasons why a car may shake during acceleration: 1. Acceleration shaking caused by clogged fuel injectors: At idle, the engine's fuel demand is relatively low, so symptoms may not be obvious. However, during acceleration, when fuel demand increases, clogged injectors may struggle to keep up. 2. Engine shaking due to restricted air intake: During acceleration, the engine requires not only more fuel but also a significant amount of air to maintain the proper air-fuel ratio for optimal engine performance. Therefore, if the engine shakes during acceleration, the intake system should be checked for blockages. 3. Engine shaking caused by ignition system failure: The engine's ignition system mainly consists of ignition coils, ignition wiring, and spark plugs. Among these, faulty ignition coils or spark plugs are the most common causes of engine shaking during acceleration.
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