Hi
On the mercedes 220 diesel elegance from 1985 I get a problem.
When I remove the cover of top of engine.I find a diesel lekage from all of injector. I mean the place of all injactors was full of diesel.
when I remover the diesel to find out what's was happen.
1-I controled all small tube(returen diesel to pump) and they are good and no lekage was from them..
the diesel lekage start from down of injector and move to top and if engine work in low speed then after few minut ,the place of injeator will be full of diesel ,but in high speed engine work very litel diesel lekage will move to top..
is that possibel of all injector are loos.
Can anyone help me please.
regard
Amsterdam

Let us know what model year and the engine type. Unfortunately the newer MB's with the 220 engine were not shipped to the US, so we may not have anyone with direct experience. However, they are not that different from the 300 engines, so you should get some decent input.

From my experience with the 1998 model year E300D, the problem you describe is due to the hoses you say you checked and are good. Even your description of heavy leakage at idle and lower leakage with the throttle open.

If you didn't have leakage before and now you have a lot of leakage, I think the hoses are the problem. The metal lines just don't fail like that and the injectors, like the metal line connectors, have no rubber seals. Nothing to abruptly fail.

The rubber hose is hard to see defects in because it is covered with cloth on the outside. The cloth is not Diesel fuel proof - it won't hold back the fuel. So, if the rubber is more than a few years old it is possible it is cracked underneath the cloth outside cover, in which case it will leak and the source might not be apparent.

On my car the hoses are very difficult to get off and get new ones on. Older cars like the W123 240D are relatively easy. I had to use a sharp knife to slit the side of the hose where it goes over the injector nipple. You have to be very careful not to scratch the nipple or the new hose will not seal over the scratch. Then I used a needle nose pliers to push the new hose on the injector overflow nipple. Don't cut them too short or too long. Either way causes premature failure from engine vibration. It leads to rubbing on the cloth and wearing into the rubber. I also had mice crawl in and chew them once.

So, the hose is inexpensive and changing it will have a good chance of fixing the problem. Good luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)