What is the reason for the slight idle jitter of Audi a6l?

Audi A6 engine has serious carbon deposition, ignition system problems or unstable oil pressure.

The most common cause of Audi A6 jitter is that the throttle valve is too dirty or the fuel injector has too much carbon deposit. When there is too much carbon deposit in the engine, the gasoline sprayed by the fuel injection head will be absorbed by a large amount of carbon deposit during cold start, which makes the cold start mixture too thin and difficult to start. In this case, it is easy to start the car only if the gasoline with carbon deposits is saturated. After the car starts, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine for combustion, which will make the mixture thicker and the combustible mixture of the engine thinner and thicker, leading to cold start. The lower the temperature, the more oil is needed for cold start and the more carbon is deposited, which will affect the success of cold start.

If the carbon deposit of Audi A6 engine has been cleaned, the throttle valve has been cleaned, the oil pad and spark plug have been replaced, and the body is still shaking at idle speed, it is recommended that you go to 4S shop to check whether the fuel supply pressure and intake pressure sensors are normal. If the oil pump oil supply pressure is abnormal or the intake pressure sensor is wrong, the body will shake.

Million car purchase subsidy