Once again, please forgive my ignorance on the subject of the MB diesel engine. On my 240D, I noticed it has been leaking diesel fuel out of this part, which sits atop the injector pump. I removed it hoping to examine it closer and figure out how to fix it but now I'm kind of stuck. The fuel leaks from the ring towards the top, where I have placed the blue arrow. I dont' know if this part comes apart any further and if maybe there is a seal in there I could replace. Please help if you would be so obliged! This leak has been slow, more like a seep, but it is consistent and makes the area around the car smell like diesel fuel ever so slightly. Here are some pics:
Also kind of curious as to what this part is called...like I said earlier...I'm a total rookie at diesel engines.