ther is no bleeder on a sprinter, you need to fill the fuel filter up seperatly & then crack the injectors off all together then nip them up 1 by 1but make sure you nip them up befor you stop turning it over.
had loads of bother with them but doing it this way you will get it away + running out of fuel in a sprinter is not recomended as your finding out there right bastards
cheers nic