W201, BENZ AID - COMMON QUESTIONS AND ANSWERS

1982 300D Mild engine shake and smoke exhaust at initial startup

I am having a 'rough idle' issue I cannot seem to resolve; I will categorize as mild because I have worked on a two 240D (1980, 1981) and I was able to perform the recommended maintenance to have them idle very smoothly.
Additionally, hard initial start or it quits right after initial startup, then I am getting a blue smoke from the exhaust at the initial startup and for about 10 minutes before complete warmup.

Here is what I have done up to this point using the manuals, advice, and parts from mercedessource:

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'80 Wagon self leveling suspension question

Greetings,

I can hear some clunking with riding over bumps in the road. I read
Kent's SLS troubleshooting guide for some tips. All of the following
checked out: no leaks, fluid level good, pump working, sway bar links tight,
pulled an accumulator and seal good.

What isn't working is the manual operation of the leveling valve. I can
also see some cracks in the differential mount. The valve was replaced
1-2 yrs ago. I have a new mount, but stopped upon finding the valve was not
responding to manual operation. Any ideas/suggestion?

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80% Defrost only from blower

I have a 1981 300SD. Fixed my A/C. Now all my A/C blows out the defroster. I noticed all modes are 80% out the defrost ducts. Where do I go next? Vacuum? Electrical? Any diagrams available for either?
I do show 15" vacuum at the source. Low I know... seems to be the shift diaphragm on the pump. It also takes about 10 seconds to shut down after key off.
What's next?
thanks,
Bob

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