What are the causes of Camry idle vibration?

[VonValeria]

Camry idle vibration may be caused by the following reasons: 1. Severe engine carbon deposits - The most common cause of car vibration is dirty throttle valves or excessive carbon buildup in fuel injectors. When there's too much carbon deposit inside the engine, the gasoline sprayed by cold start injectors will be largely absorbed by these deposits; 2. Engine misfire - This mainly refers to one or more cylinders not working properly, manifested as: intermittent exhaust gas flow with noticeable exhaust pipe vibration, obvious engine vibration that can be felt, sometimes accompanied by "popping" sounds. This is mostly related to ignition coil failure; 3. Uneven air-fuel mixture in the engine can also cause idle vibration after cold start. The lower the temperature, the more fuel required for cold start, and the presence of carbon deposits will significantly affect whether cold start proceeds smoothly.