Only had the this car for about an month,this site is very good,Am founding on the base of 3 of my injectors are wet ,leaking?is there an gasket that needs replacing?

most often, it's the retun lines that are leaking and need replacement. Quite cheap. Plenty on the subject here. You can buy the hose from fastlane here.

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1985 300D cali 190K

http://mercedes.thatchermathias.com/mw300d.jpg

Agreed. I replaced mine for $11 at the Mercedes dealer. Look at them closely, see if the ends looked cracked and split. I wouldn't pull them off until I had the replacements though, mine were very brittle, and had to scrounge up some vacuum line to put on for the ride to the parts dept.
Other people have had luck replacing them with various other tubing, but the dealer part is cheap, and I live close.

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On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST

1983 300SD - 305000
1984 Toyota Landcruiser - 190000
1994 GMC Jimmy - 203000

https://media.giphy.com/media/X3nnss8PAj5aU/giphy.gif

I did check the lines,ok for now,seen small amount of fuel going from the base for the first injector,can I just retort this injectors,so they dont leak?

until you change those very inexpensive hoses, I wouldn't mess with the injectors - resetting torque or otherwise. If you do decide to remove the injectors, have a set of heat shields on hand to switch out with.

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1985 300D cali 190K

http://mercedes.thatchermathias.com/mw300d.jpg

The Injectors very, very,very seldom leak between the upper and lower Injector Bodies; and having 3 of them leak would be extremely unusual. The exception would be if your Injectors have been taken apart for some reason.

There is easily a 99% chance that the leaks are being caused by those skinny fuel return hoses.

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84 300D, 82 Volvo 244Gl Diesel

I agree with the posters who suggest replacing all of the fuel return lines, including the one from the spin on filter to the first injector. The hose is inexpensive, and if you have never replaced it, the old hose is almost always a little leaky. However, I would also suggest that you check your spin-on fuel filter carefully. Once, I though I had a leak at the first couple of injectors, and then learned that the filter had been replaced without an o-ring, so a fine spray of fuel was leaking from the top of the fuel filter and spraying onto the front of the engine. It only looked like it was leaking from the injectors.

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Gene

1983 300d (133k)
1983 300sd (118k)

Quick question, do the injector return lines simply pull off and the new ones push back on?

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1984 300D, 228k, Light Ivory, Java MB-Tex

yes.

if it won't come off by pulling, you might have to cut them, but do it carefully with a razor knife to avoid scoring the injector nipples.

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1985 300D cali 190K

http://mercedes.thatchermathias.com/mw300d.jpg