Where can I find diagram of the injection system 4 mercedes sprinter 308d ?

I have the Peter Russek manual couldn't find a download but it's on e-bay, say "mercedes-benz 208D and variants" on the spine, but it's definitely on ebay. I too have a problem with my fuel injection system, seems when the engine gets hot the throttle doesn't shut off and it wants to run away with you - is this likely to be a degraded seal within the fuel injection system? My manual states the system is non serviceable... hmmmm....

DC
January 2010

need to know where leak comming from high pressure side(silver pipes to injectors ) or leek off pipe small black pipe email;

jinx
January 2010