I think what we're talking about here is delivery valve seals. Its one of those
jobs thats so easy some people find it difficult. Had it done on my '85 190D by
my Indy and he pooched it. Cost me $1000 by the time he got it straightened
out, he claims it cost him an equal amount and he lost money on the job,
whatever...
So when I needed them done on the '84 190D I figured I'd do it myself, if
anybody was going to screw it up it might as well be me. I took my time, I
think it took me around 2 hours for what is really like a 30 minute job, but I
managed to not screw it up and the car stopped leaking.
In your case Larry I'm going to suggest it was probably screwed up, one of the
delivery valves is likely rotated in its bore and you'll need somebody who
actually knows what they're doing inside the IP to fix it. Hope I'm wrong on
that...
-Curt
From: Larry Turner via Mercedes <mercedes@okiebenz.com>
To: "mercedes@okiebenz.com" <mercedes@okiebenz.com>
Cc: Larry Turner <l02tur...@comcast.net>
Sent: Saturday, January 21, 2017 7:31 AM
Subject: [MBZ] My 124 is idling rough (91 300D 2.5Turbo)
Hi Gang, Well, I should have left well enough alone. But oh, no. I
had to have a minor leak repaired. Not wanting to fix it myself -
especially since it wasn't leaking where I suspected - I took it to a
shop. After "pressure testing" it to find the leak (no idea how that
was done) but they found a leak at the injector Valves on top of the IP
They obtained new o-rings from BAP-Geon and repaired it. And the leak
is in fact gone. Unfortunately when we got it back we found it idles
rough and lacks power although it seems to pick up power once the RPMs .
I want to fix it myself rather than take it back, be without a car for 1
or more days - and possibly have more problems. so, I will be looking
for vacuum leaks today, unconnected vac hoses, etc. I am wondering if
there's anything else I need to look at?
BTW, I replaced the o-rings several years ago and found some oddities
after I put it back together. _That time _it was noisier than before, so
I put the old springs back in and that fixed the noise problem -
although it may not have been the springs I replaced but something about
the technique used when re-torquing the fittings (my personal
assumption). Of course, it may have been something completely different.
I plan to scour the WSM and see if there's anything there. Got any ideas?
As always, thanks for your help !!
LarryT
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