Bmw 320 fault code 2889dme intake valve carbon deposit

1. Replace air cleaner element 2. Thoroughly clean the carbon deposits in the intake valve and throttle valve 3. Delete engine adjustment and upgrade software 4. Add fuel additives.

There are two main reasons for carbon deposition in German cars. One is the quality of domestic gasoline, and the other is to clean the engine when changing the oil. As long as the engine is cleaned every time the oil is changed, the carbon deposit is removed, and fuel treasure is added to relieve the carbon deposit when refueling. Usually, starting with a large throttle can prevent this phenomenon, and raising the speed regularly allows the engine to run at high speed to remove slight carbon deposits by itself.