You can find a diagram posted many times which shows the parts of the emissions which can be eliminated, if like most you figure they no longer are functioning anyway. About half the underhood vacuum stuff.

I have adjusted my valves many times and don't have any bent wrenches. One metric set of box wrenches I use is a set of thin shiny ones from Harbor Freight, which must be just short enough to clear the injector tubes. I kind of forgot, but recall it was never a problem. I recall you need two 14 mm wrenches. The trick is that the gap will often decrease as you tighten the lock nut, depending on which of the 2 wrenches you move, so verify again after tight. I think the valve stem can spin as you tighten.

You'll be lucky if the air filter bracket which bolts to the intake manifold isn't cracked. I got so tired of that in my 1984 300D that I installed a frame-mount air cleaner like in my 1985 CA 300D. Had to cut the outlet tube off to meet the lower turbo inlet and used silicone duct hose.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans

"I'll do this - are you saying to get my little mightyvac vacuum pump and apply vacuum to the valve independent of anything the vacuum pump may or may not be doing?

Also, not sure what you're referring to with this:"

Quote:
and delete all those pesky, leaky rocker box valves and pipes
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Yes ~ the little plastic pipe leading from the back of the intake manifold gets clogged up ~ put your Mity-Vac on the pipe connected to the ALDA and operate it ~ the needle must not budge a fraction else there's a restriction in the pipe, or the over boost switchover valve on the firewall , all easy to rmove and clean out using the purple de greaser Rich recommends...

Average de greasers will not do the job ~ (simple green, awesome, etc.) you need some sort of industrial cleaner, I find the purple stuff diluted 50/50 with tap water works well, I've had to use a thin bit of medium stiff wire to scrape some of the plastic boost pipes clean of nasty gooey stuff ~ DO NOT USE THE KITCHEN / LAUNDRY ROOM SINK IF S.W.M.B.O. IS HOME !! .

I have an old 1923 white porcilan kitchen sink that's some what porous, after every thing is cleaned up I go back and use the same purple stuff to get it white again comet et all no longer work .

Do this (ALDA pipes & valve cleaning) first then see about the vacuum valves on the rocker box ~ only ever do one thing at a time else you'll make some minuscule mistake that takes forever to sort out and sours you on D.I.Y. work .

FWIW, the ALDA pipes have NOTHING to do with the engine's vacuum pump ~ that's why you do this first them move on once you're happy with it .

Don't be afraid, the good people here have a collective brain trust that's incredible and will help you no matter how it goes, O.K. ?.

They even taught me when I changed from vintage gasoline repair to Diesel Head .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better