What causes car shaking when pressing the accelerator deeply?

[LaEli]

The reasons for car shaking when pressing the accelerator deeply are: 1. Ignition system: Spark plug issues, which could be due to expired lifespan or excessive carbon buildup. The solution is to replace the spark plugs; 2. Intake system: A dirty throttle body or oxygen sensor, which can lead to an improper air-fuel mixture ratio, naturally causing shaking. The solution is to clean the dirty parts; 3. Fuel system: Common causes include injector failure, fuel pump issues, or clogged fuel filters. The accelerator, also known as the 'throttle' or 'gas pedal', is the control device that regulates engine power (thrust). In piston aircraft engines, the throttle controls the carburetor's throttle opening to adjust cylinder filling, thereby determining the engine's output power.

[AliceFitz]

Last week I encountered the same issue driving my old car on the highway - when stomping on the accelerator, the steering wheel shook like a vibrating phone. The mechanic said this is often caused by aging engine mounts, where cracked rubber pads allow engine vibrations to transfer directly to the chassis. It could also be time to replace the spark plugs, as worn plugs cause uneven ignition leading to unstable cylinder operation during sudden acceleration. I've also noticed that incorrect tire balancing can cause this, especially if new tires are installed without balancing - the whole car body shakes when speed increases. These issues can seriously damage your car if not fixed promptly. In my case, spending 300 yuan to replace the engine mounts solved the problem. My advice: don't ignore vibrations when you notice them.

[Walter]

I'm quite into cars and often troubleshoot issues myself. When encountering acceleration shudder, I first check three key areas: 1) Ignition coils - faulty ones can cause misfires, making the car jerk when you floor it; 2) Throttle body - excessive carbon buildup restricts airflow, causing the ECU to dump fuel but still struggle during hard acceleration; 3) Driveshaft - worn universal joints create uneven power delivery. Last time my car shook, it was a CV joint issue that became more noticeable during turns. Also, don't overlook small details - like an overdue air filter causing rich mixture that can also lead to shaking. These checks aren't difficult and DIY can save you good money.

[StRyan]

Last month, I was in a hurry to drop my child off at school and pressed the accelerator too hard, causing the car to shudder, which scared me into heading straight to the repair shop. The technician said it was a common issue, falling into three categories: first, fuel problems, such as clogged injectors or a failing fuel pump; second, ignition issues, like leaking high-voltage wires or excessive spark plug gaps; and finally, mechanical reasons, with aging engine mounts being the most typical. He used a computer to read the data stream and found misfires in the third cylinder, fixing it by replacing the spark plugs with a set of double iridium ones. He reminded everyone to regularly clean carbon deposits, as this is an expense that shouldn't be skipped.