What Causes Engine Shaking and Lack of Power?
2 Answers
Engine shaking and lack of power can be caused by: 1. Damaged spark plugs: Worn electrode gaps lead to insufficient spark, resulting in incomplete combustion of the air-fuel mixture; 2. Cracked ceramic part of the spark plug: If a spark plug fails to ignite, even one cylinder not working will cause increased engine shaking; 3. Poor fuel quality: Poor atomization by the fuel injector leads to incomplete combustion in the cylinder; 4. Excessive carbon buildup: A dirty throttle body or clogged fuel injectors can cause the throttle to not close properly or the idle motor to stick, requiring timely cleaning of the throttle body and fuel injectors.
I haven’t been driving for long, but I’ve also encountered the issue of engine shaking and lack of power. That time, it was due to aging spark plugs, and replacing them fixed the problem. Other common causes include damaged ignition coils, which make the engine misfire, or fuel system issues like clogged injectors or a weak fuel pump, affecting fuel supply. Leaks in the intake manifold can also lead to insufficient air supply. Long-term carbon buildup can worsen the shaking. I’ve learned that if left untreated, the engine may wear out faster, fuel consumption may increase, or it might even stall midway. So, I pay more attention to maintaining the spark plugs and air filter, and regularly clean the fuel system, which has reduced such problems significantly.
