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  #1  
Old 06-15-2013, 03:19 PM
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Join Date: Jun 2013
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1972 mercedes 220D Smoking under acceleration

I am looking to purchase a 72 220D however i am concerned about the excessive smoke it is putting out. The Smoke is a light blue/white smoke. It is billowing primarily during acceleration. If sitting at idle it will smoke slightly, not much. The car has been sitting for the past 15 years without being run. At some point before it was parked the engine was rebuilt. I have tried getting specifics but the current owner did not do the rebuild. Unfortunately when i was looking at the car i did not check the antifreeze to see if it had oil/bubbles in it.

Could it be moisture build up in the 15 year old fuel? Next time I look at it I plan to run a compression check on it. It fire up just fine.

Thanks!
Mark

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Old 06-15-2013, 04:56 PM
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Location: Carson City, NV
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You'll probably get a better response posting this in diesel discussion.

I'm surprised it even runs on fuel that old. Did you at least change all the other fluids? If not, I suggest you do so. Then drain or drive the old fuel down near empty and fill up with fresh and see if you're still smoking. I've seen vehicles do funny things after sitting that clear up just from being driven again.
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83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 362,xxx miles
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Old 06-15-2013, 10:13 PM
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Remember you can't use a normal compression tester on a diesel, even a worn out diesel can ruin a gas engine compression tester, way too much squeeze.

Would help to know miles on the car.

can be lots of things, valve guides, injection pump, worn rings, etc

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