If it has a vacuum pump, I'm almost positive it's fuel injected (D-
Jet), which is a VAST improvement over the Solex carb fitted on those
models. No one, including Solex and MB, ever got that carb to work
well.
As noted, white smoke is coolant, and you can smell it. Typically
it's most obvious when first started and it will really show up on
cold days.
Pale grey stinky smoke along with low power and a funny subdued engine
sound is transmission fluid, although if you have a vacuum pump it's
fairly unlikely you have a vacuum modulator connected directly to the
intake, but check. If there is transmission fluid in the vacuum line
from the modulator, you must replace the modulator as soon as possible
-- transmission fluid in the combustion chambers is bad mojo (think
stuck rings and badly chewed cylinder walls).
If you have a leaking modulator, you don't have leaking valve stem
seals. Those cause blue smoke on startup from oil leaking down into
the cylinders when the engine is off, and excessive oil consumption.
You can also get some blue smoke on deceleration, but never enough to
see from the driver's seat. No white smoke from valve guide seals.
Sunroof desperately needs lubrication. Don't use ANYTHING but the
official MB paste, it's the only thing that actually works and doesn't
cause the accumulation of crud. If someone used grease, clean it all
off and use the proper MB stuff, it's a soft wax. Works perfectly.
Have fun!
Peter
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