Quote:
Originally Posted by kerry
Since it's happening at idle, I'm going with a failed diaphragm in the IP. There's a butterfly valve in the intake manifold which produces a vacuum at idle, hence the sucking of oil from the IP.
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So if this were the case opening (or possibly removing) the butterfly would clear the smoke up, to help with diagnosing the problem wouldn't it? Also, couldn't this vacuum at idle be sucking oil from the line going from the vacuum pump to the intake, if the vacuum pump has a torn diaphragm?
Also, doesn't the IP have its own oil supply on these cars, an earlier comment mentioned it, so if this is the case wouldn't the IP run out of oil and cause other problems or does it refill itself somehow from the main supply?
Thanks again guys
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1982 300D Turbodiesel, daily driver. Mods so far: Fram 8038 paper filter, 4 brake light mod, Gen II w126 (front) rotors/calipers, boost turned up to 12lbs, non-egr manifolds, water/methanol injection, 4-speed manual
1980 300SD Turbodiesel, project car, nearly ready to hit the street
1974 240D, New paint
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