What are the reasons for severe engine vibration in the Buick Excelle?

[McSarah]

Severe engine vibration in the Buick Excelle may be related to excessive carbon deposits or ignition system failures. The following are the reasons for engine vibration: 1. Severe engine carbon deposits: When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean mixture during cold starts, making it difficult to start. 2. Ignition system issues: Check the working condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or bad spark plug firing can also lead to such faults. 3. Aging engine components: Engine vibration in cars is also related to the aging of engine mounts (also known as engine cushion pads).

[VanBradley]

I've been driving a Buick Excelle for several years and once experienced severe engine shaking. It happened on a winter morning when starting the car - the entire vehicle was vibrating. After inspection, it turned out the engine mount rubber had aged and could no longer absorb vibrations. The mechanic said Buick Excelle's engine mount rubbers typically last about 5 years, and may crack over time, leading to increased shaking. They also checked the spark plugs and found excessive gap with electrode erosion - replacing them stabilized the engine. Now I inspect these components every 6 months and pay attention to idle stability while driving. Unresolved engine shaking increases fuel consumption, may damage other components, and affects safety. From experience, timely repairs prevent minor issues from becoming major faults. While Buick maintenance costs aren't high, don't delay repairs.

[CamillaLee]

Engine shaking can stem from various causes. Issues with the ignition system are common, such as worn spark plugs or faulty ignition coils, which lead to incomplete combustion and engine imbalance. Problems in the fuel system, like clogged fuel injectors or insufficient fuel pump pressure, can also cause unstable fuel supply and result in shaking. Additionally, damaged engine mounts are a frequent issue in the Buick Excelle, as they absorb vibrations; once cracked, engine movement transfers to the body. Faults in the idle control valve or mass airflow sensor may also affect performance. It's advisable to start with simple checks, like seeing if the warning light is on or listening for unusual noises. Buick models are generally reliable, but regular maintenance can prevent these issues. If shaking occurs, seek professional diagnostics early to ensure driving safety.

[RichardLee]

The Buick Excelle's engine is shaking severely, and I believe it's caused by excessive carbon buildup or a dirty throttle. After prolonged use, carbon residue from gasoline combustion accumulates in the intake system, causing the throttle to stick, which results in shaking at idle. Driving more in higher gears can help clean it. Regularly changing the engine oil and air filter, and avoiding low-quality fuel, can also reduce the occurrence. If the shaking is severe, avoid driving fast and have the spark plugs and engine mounts checked nearby. These are not difficult to replace yourself; just use matching parts. From a safety perspective, an unstable engine can affect brake response, so early intervention is more cost-effective.