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Originally Posted by blitzgritz
..Does have black build-up on tailpipe and blows a small amount of white smoke on start-up.
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Originally Posted by t walgamuth
well, yeah. now i sort of skimmed over the white smoke issue and oil consumption before.
if the white smoke dissapates quickly it is steam and indicates a bad head gasket or cracked head (cracked heads are not common with a 110, and head gasket problems arent either). if it is bluer and drifts away more or less without much dissapation then it is oil smoke and as noted above indicates probably valve seals.
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I would be highy suspicious of valve guides and/or valve guide seals letting a small amount of oil into cly when setting. I rebuilt my very early '73 450 SLC engine at 140K due to chain noise, and while I was at it I repaired and/or replaced everything that might present a problem in the future. I had all new guides, seals and valves replaced with factory parts.
I now have well over 300K on the engine and it still runs very well. BUT it definitely has seals or guide wear as it is puffing smoke on startup. I don't think Mercedes has the greatest guides or seals as far as long term wear, at least in comparision with more modern long term engines.
Question for ctaylor738
I imagine the supplemental air valve on these engines is a pretty simply device?? Do they ever go bad??
I have to artificially clamp off the air hose running to it to control my idle speed which would get entirely too high otherwise. And this act tends to render my idle speed adjustment screw less effective
BTW I live here in the DC area as well