I'm finally getting around to replacing the injector seals on my 190DT... the double-whammy of B99 and ULSD has me worried to think how much toothbrush cleaning the side of my engine / IP is going to need. Anyways, I was wondering if anybody knew of viton injector seals that would work? I've searched here and didn't have much luck, except to find out about the frypower site that sells just about everything BUT the injector seals. Do they exist? And if so, where can I purchase these panaceas of modern engineering? Or should I just get OEM seals and hope for the best?

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The stable, er, 1 horse :
1987 190D 2.5 Turbo (running well, and bloody-well better since it's the only car I have now)

There are no orings associated with the injectors.....

Do you mean delivery valve seals and crush washers at the IP? If so, ALL 60x series pumps use the same size orings.

If you've not done that job before you should be extremely cautious and educate yourself first. Is easy to ruin a IP if you pull the worng parts.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

a member sells 6 Viton O-rings for the delivery nozzle seals for about $7
http://www.fryerpower.com/store/page11.html
I highly suggest using Viton injector return lines on the 6 cyl engines the stuff really lasts!

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!

Yeah, I will be getting set of those... but like I said before, his set contains all but the one particular one I need.

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The stable, er, 1 horse :
1987 190D 2.5 Turbo (running well, and bloody-well better since it's the only car I have now)

Its still not that clear....I have a feeling you are now talkig about the injector return lines (braided cloth hose) that goes from one inj to another?

That is also availabel at the website you've visited.

If you have fuel puddling between the inj and the prechamber it must come from above. Either return lines, from the two halves of the inj body itself or where the metal fuel lines attach to each inj..

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Here is a pic of my leaking #1 injector... what a mess!




So am I to assume there is NO seal between the injector housing and the prechamber? By the responses so far that is what it sounds like.

Upon further inspection (as kinda seen in the pic), it appears that I have a leak right below the big (25+mm) nut on the injector. Crap... I probably need to just have the things rebuilt and balanced. I know in the pic it looks like the leak is coming from the return lines, but it isn't... the leak has sprayed them. The return lines are less than a year old, BTW.

edit: oh, and I've seen fuel bubble up from the prechamber... squeezing around my #2 injector housing. Maybe it's air hitting a pool of fuel, but I'm guessing that it shouldn't happen either way.

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The stable, er, 1 horse :
1987 190D 2.5 Turbo (running well, and bloody-well better since it's the only car I have now)

After I posted I realised I might've been a bit vague. The seal I'm referring to is at the point where the entire injector seats into the prechamber. That is what's leaking. I'm not talking about any internal injector seal. Although the crush washers might also be a good one to replace in addition since the lines have to be off anyways.

Does that clear it up any?

I hear you on that one! I'm still wieghing my options on how to proceed. But regardless of how that happens, I want to make sure I have all necessary parts in hand before anything occurs.

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The stable, er, 1 horse :
1987 190D 2.5 Turbo (running well, and bloody-well better since it's the only car I have now)