Date registered: Dec 2005
Vehicle: W211 E320 Bluetec R129 SL500 - $1300 car ........ Ford F350 6l
Location: CA Bay Area
Mentioned: 9 Post(s)
Quoted: 1120 Post(s)
Remove the 8 (?) screws on the top cover, disconnect the metal fuel tubings, disconnect leak hose, blow the dirt from the hole, unscrew the injector with special deep socket.
It is about 20 minutes with reassembly for somebody who had it done before.
Good advise would be check the crankcase breathing fittings, since they became bristle with the age.