What are the reasons for severe engine shaking during vehicle startup?

[GeorgeMarie]

The reasons for severe engine shaking during vehicle startup are: 1. Dirty throttle body; 2. Excessive carbon buildup in fuel injectors; 3. Poor ignition system performance with weak spark plug firing; 4. Abnormal fuel pump pressure; 5. Faulty readings or malfunction of the intake pressure sensor; 6. Worn engine mounts. The solutions for severe engine shaking are: 1. Clean or replace the air filter; 2. Use a multimeter to measure resistance and replace wires with high resistance; 3. Maintain engine operating temperature within normal range; 4. Clean fuel injectors; 5. Replace spark plugs; 6. Clean fuel system and idle control valve; 7. Replace engine mounts.

[LaneDella]

My car has been shaking like a sieve during startup recently, scaring me to the point of sweaty palms. A quick check revealed that aging spark plugs are a major issue – poor ignition causes the engine to wobble. Also, a clogged fuel system can easily cause this, like when a dirty filter prevents proper fuel delivery. If the engine mounts are loose or damaged, the shaking becomes more noticeable. I remember replacing a mount last time and the stability improved immediately. Another culprit is excessive carbon buildup – a dirty combustion chamber affects performance. Quick tip: Don’t rush to turn off the engine after parking; listen for unusual sounds first. If the shaking persists, it’s safer to drive to a nearby repair shop for inspection. Regular maintenance can prevent many issues.

[BradyRose]

There are several common causes of severe vehicle engine shaking. Faulty spark plugs or ignition coil failure are the most prevalent issues, leading to incomplete fuel combustion and engine vibration. Fuel system problems are also common, with clogged fuel injectors or insufficient fuel supply causing the car to struggle. Engine mount damage can amplify the shaking sensation. Air intake leaks and improper air-fuel ratios can also trigger vibrations. Excessive carbon buildup in the combustion chamber is another likely culprit. You can perform simple preliminary checks: inspect spark plug conditions, verify mount stability, and try adding a cleaning agent to remove carbon deposits. However, don't attempt complex repairs yourself - especially with severe shaking posing high risks. Professional shop diagnosis and repair is the reliable solution.

[EmilioAnn]

My new car shakes violently after starting, and I'm really afraid of driving it on the road. A friend took a look and said it might be due to thick carbon deposits in the engine or a faulty sensor. Worn ignition components can also make the car wobble like it's drunk. A cracked intake pipe leaking air can worsen the shaking. Safety first, never ignore such abnormalities, and contact a mechanic as soon as possible. Usually, be careful not to use random fuel; high-quality fuel can reduce problems.