blue black smoke with acceleration,120k on odometer,did diesel purge no change,approx 2 qts oil in 3000..could i consider injectors or am i looking at rings or valves or intake seals?how can i distinguish?.is this oil consumption high.?

My 87 190d does about the same. I also have a bit of blue smoke on acceleration. It is worse when coming down a big hill. When stopped at a light I get a puff or so but does not leave a smoke trail down the road. I have come to the conclusion that it is valve stem seals not rings. It is worse when it is hot out. I have heard of a number of 190D 's with the same issue. I have taken to using a "Smoke stop" additive which works but you have to use twice as much as a gas car since the oil capacity is about double. If there is a significant black component to the smoke you may need to look at injectors Cheers Dan

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