W110 W111 W112 Sedan, 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:

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

'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?

Chassis Model Number

W123

Forums

Transmission / Suspension Specific Aid

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

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

Rough idle after warm up 1985 300D

I bought this car Nov 2004 and it had a rough idle when warmed up. In an effort to solve this I set the valves, replaced the injectors with rebuilt ones. No help. Meanwhile, and for other reasons, I installed a rebuilt engine Jul 2006. By Sep 2006 it too was idling rough after warm up.
Once again I verified valve settings and replaced the injectors with rebuilt units. I also replaced and adjusted the damper bolt, replaced the the motor mounts, transmission mounts and the engine shocks. No help.
In Jun 2007 I went all out and put in a dealer supplied rebuilt injection pump. No help.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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