injection pump 68 220D
 

Howdy folks, I am new here, just got in a reltaionship with a 68 220D.

anyway, the injection pump seems to keep losing oil and leaking fuel and it trys to runaway when i overfill it. anyone can suggest a good book, or know how to go about refurbing this pump. i wouldn't really know what the proper names of the parts and seals are i need .
many thanks, jon

From everything I have heard and read, these pumps should only be tackled by authorized Bosch repair centers or those with the tools and instruments to do the job correctly. One of the few jobs on a Benz diesel that is not DIY !!

Why are you overfilling the injection pump? They don't hold too much oil. There is a screw near the bottom that you remove, and then add oil under the red "oel" cap until it comes out that drain hole. There is also another overflow drain tube that will leak oil & fuel if the IP is overfilled. It might drip from there for quite a while until things are at the proper level. My car always seems to leak a little something after I service it, but it stops; amazingly my car doesn't leak any fluids at this moment (knock on wood).

If it is indeed leaking from a seal, I think a diesel injection shop that works on Bosch pumps would be the best bet to refurbish the pump, although with a car this old, it might be more economical to find another 220D in a boneyard and get a complete IP from it. Also **************.com has good used injection pumps from time to time, for not too much money.