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2009 Ml320 Blu Tech oil coming thru PCV valve

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2009 Ml320 Blu Tech oil coming thru PCV valve

 
Old 02-21-2019, 04:11 PM
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2009 Ml320 Blu Tech oil coming thru PCV valve

I replaced my PCV component and valve recently because the old one was allowing oil through to the turbo. I am having the same problem with the new one. It is a Mercedes part not after market. Is there a way to test the component on the hose and the electric supply to that component ? Or is there another solve to this?

Thank you in advance,
George
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Old 02-22-2019, 01:35 AM
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George, PCV valves went away decades ago. What is the part number of the valve you replaced and what was the code number?
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Old 02-22-2019, 03:00 PM
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The part number is W0133 1977304 described as Crankcase vent valve and PCV valve. The hose has an electric component on it. I guess it should be preventing oil from being sucked from the crankcase to the turbo. But oil is getting through. I replaced the whole part the plastic part on the engine as well as the hose. No code number is coming up.
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Old 02-22-2019, 04:02 PM
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This number, W0133 1977304, is an aftermarket part number and not a M/B number.

Is your truck a CDI or Blue?
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Old 02-22-2019, 06:07 PM
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This is the part # that I installed B2017460220 The Engine is a Blu Tech diesel 3.0L[color=left=#666666].[/color]

Last edited by Geoeray; 02-22-2019 at 07:13 PM.
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Old 02-22-2019, 06:10 PM
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I don't know why the color and #'s in parentheses keeps coming up.
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Old 02-23-2019, 05:13 AM
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Geo, please post the info on this valve. Who did you buy it from, post the link. Any info will help.
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Old 02-23-2019, 08:10 AM
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https://shop.advanceautoparts.com/p/...rm=B2017460220 Link to where it was purchased. It is a Mercedes brand part. Not an aftermarket. The orange piece is where it plugs in.
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Old 02-23-2019, 02:34 PM
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On the part tag there is a part # A642 xxx xx xx. Please fill in the rest of the part number.
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Old 02-24-2019, 01:29 PM
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I had mine replaced in 5/17. The part number is A642 010 1891.

Truck has run smoother ever since.
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Old 02-25-2019, 10:43 AM
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part number

[color=left=#333333]The part number is A642 010 1891.[/color]
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Old 02-25-2019, 10:44 AM
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Did your replacement stop the turbo from pulling oil from the crankcase?
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Old 02-26-2019, 06:56 PM
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Geoeray - I had it replaced only because of the mileage on the truck - 90K at the time. I had read where the rubber diaphragm stops working properly and then allows the turbo to draw in not only the oil vapor, but actual oil. This causes several problems which I wanted to avoid. As I had stated, I have noticed a smoother performance ever since the replacement.

This video explains it further:
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Old 02-27-2019, 01:47 PM
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Thanks. The video is helpful. I had not come across this. I may have a defective Original Equipment replacement part. Diagnosis ahead.
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