Mercedes S class (W221) with motors 272 and 273 (2005-2009) of the exhaust was installed a intake manifold with sliding crowns. They are used to dose the amount of air flowing into the cylinders. After 60 ,000-100, 000 In many cases, the flaps are starting to hang, resulting in unstable idling speed, increasing fuel consumption, and reducing the power of the engine. It is also possible to turn on the Check Engine indicator.
Because the node is not selected, the intake manifold problem can only be corrected. If this is not done in time, the collector's shale can be completely spilled and their parts will be caught in the combustion chamber, leading to a serious breakdown of the engine.