I recently bought a pre-facelift W204 C220 with the OM646.811 engine. The car started making a weird noise, and a friend suggested it might be the injectors. However, the sound seems to be coming from the right side at the back of the engine.
When I checked, I noticed two tubes that were loose—and they’re still loose. It sounds like a vacuum leak, the engine is running rough, and an ESP fault has appeared.
I’ll attach some pictures as well. Does anyone know what those tubes might be?
