1999 Mercedes Benz 300td

Engine Performance problem
1999 Mercedes Benz 300td 6 cyl Two Wheel Drive Automatic 200k miles

hi I have the 99 e 300td with 6 cylander I had problem with the performance so I had the troble checked and it was booster pressur switch so I replaced them but still not good, I checked all the vacum system and everything possible to leak vacum but still not running good and I have some problem with shoutoff valve for injector pump I put that new but it leaks fuel from around it please tell me what I can do I am in Armenia and it is very hard to find parts and I worked on cars for 26 years. Thank you
February 28, 2010.

You will first have to repair the leaky shut off valve, before the vehicle will run correctly

Dr Loot
Mar 5, 2010.