Mercedes Sprinter 313cdi

A time ago I got a MB Sprinter 313Cdi Comonrail with a fault: when putting the engine running and leaving a minute began to do detonations, or at times it worked impequable and returned the detonations and goes out. I do not remember the number of the obd.
Change the "DVR" valve and diesel filter, clean the diesel pipe. A time later talking to a Bosch Campina Brazil teacher, he tells me that the problem was in the cables D injectors that Moberlo separated from the contact. I ask: had similar problems ???

I have had one with a customer van
began to spit gasoil by the copper washers of the injectors and calco the connectors of the injectors sell the Mercedes but I warn you, the injectors are welded and the injectors and care with press