What causes the engine of an Audi A6L to shake at idle?
2 Answers
The reasons for the engine of an Audi A6L shaking at idle are: 1. Severe engine carbon buildup: This includes a dirty throttle or excessive carbon deposits on the fuel injectors; 2. Issues with the ignition system; 3. Unstable oil pressure; 4. Aging engine components. The solutions for the engine of an Audi A6L shaking at idle are: 1. Replace the spark plugs; 2. Clean the fuel system and check if the idle control valve has carbon buildup, which should be cleaned. Taking the 2021 Audi A6L 45TFSI Premium Elegance model as an example: It is a mid-to-large-sized 4-door 5-seater sedan with a length, width, and height of 5038mm, 1886mm, and 1475mm respectively, a wheelbase of 3024mm, equipped with a 7-speed dual-clutch transmission, and a top speed of 245 kilometers per hour.
I've been driving an Audi A6L for a while now, and idle vibration is quite common. Mostly, it's caused by aging spark plugs. Over time, the electrode wears out, and delayed ignition can make the engine shake badly. Carbon buildup in the throttle body is another major cause, especially if you frequently drive short distances in the city without warming up the engine properly, leading to restricted airflow. Additionally, cracked engine mount bushings can cause the body's shock absorption to fail, making the vibration more noticeable. Clogged fuel injectors can also lead to uneven fuel spray, worsening the vibration. It's recommended to replace spark plugs regularly and clean the throttle body carbon deposits every 20,000 kilometers. You can check the mount bushings yourself for visible cracks. Avoid idling for too long, as it puts a heavy load on the engine. With proper maintenance, the car will run much smoother.
