2009 Ml320 Blu Tech oil coming thru PCV valve
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Junior Member
Joined: Dec 2018
Posts: 20
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2009 Ml320 W164
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
Thank you in advance,
George
Thread Starter
Junior Member
Joined: Dec 2018
Posts: 20
Likes: 1
2009 Ml320 W164
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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Thread Starter
Junior Member
Joined: Dec 2018
Posts: 20
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2009 Ml320 W164
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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Member
Joined: Apr 2008
Posts: 205
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From: Florida & North Carolina
2008 ML320CDI 4Matic, 2006 C350
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:
This video explains it further:
Newbie
Joined: May 2019
Posts: 7
Likes: 0
2009 ML320 bluetec
I have the same car you do. just wanted to know how it went? did you replace the valve again ? did it stop pulling oil ? I noticed oil on my turbo intake seal..I'll be doing this shortly I have 118k i believe it original pcv.
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Junior Member
Joined: Dec 2018
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2009 Ml320 W164
I would go about the repair differently if I did it again. I replaced the PCV and Replaced the red gasket/seal between the plenum and the turbo. Replace the red seal at the connection of the plenum and the turbo. To remove the plenum loosen each air filter enclosure and the push them off of the plenum moving one left and the other right. unplug the electric connections to the plenum. Loosen the plenum from the turbo. Should come right off now. Replace the red seal. Put it in the correct notches in the plenum and slide it on to the turbo. Make sure it is on the turbo without any of the red seal or kinked, pinched. Be gentle the plastic plenum has become brittle.
After I replaced the PCV I replaced the red seal. The turbo was still sucking oil after the PCA replacement. I think the plenum air leak contributed to that. Now having done all of this the turbo sucks the oil down to about a quarter of an inch above the bottom of the hash mark on the dipstick and stops. So. The engine should run fine on 8.25 quarts. But I still check the oil level and don't fill it all the way up.
Does your Check Engine light come on frequently for other reasons?
After I replaced the PCV I replaced the red seal. The turbo was still sucking oil after the PCA replacement. I think the plenum air leak contributed to that. Now having done all of this the turbo sucks the oil down to about a quarter of an inch above the bottom of the hash mark on the dipstick and stops. So. The engine should run fine on 8.25 quarts. But I still check the oil level and don't fill it all the way up.
Does your Check Engine light come on frequently for other reasons?
Newbie
Joined: May 2019
Posts: 7
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2009 ML320 bluetec
I would go about the repair differently if I did it again. I replaced the PCV and Replaced the red gasket/seal between the plenum and the turbo. Replace the red seal at the connection of the plenum and the turbo. To remove the plenum loosen each air filter enclosure and the push them off of the plenum moving one left and the other right. unplug the electric connections to the plenum. Loosen the plenum from the turbo. Should come right off now. Replace the red seal. Put it in the correct notches in the plenum and slide it on to the turbo. Make sure it is on the turbo without any of the red seal or kinked, pinched. Be gentle the plastic plenum has become brittle.
After I replaced the PCV I replaced the red seal. The turbo was still sucking oil after the PCA replacement. I think the plenum air leak contributed to that. Now having done all of this the turbo sucks the oil down to about a quarter of an inch above the bottom of the hash mark on the dipstick and stops. So. The engine should run fine on 8.25 quarts. But I still check the oil level and don't fill it all the way up.
Does your Check Engine light come on frequently for other reasons?
After I replaced the PCV I replaced the red seal. The turbo was still sucking oil after the PCA replacement. I think the plenum air leak contributed to that. Now having done all of this the turbo sucks the oil down to about a quarter of an inch above the bottom of the hash mark on the dipstick and stops. So. The engine should run fine on 8.25 quarts. But I still check the oil level and don't fill it all the way up.
Does your Check Engine light come on frequently for other reasons?
Member
Joined: Jun 2016
Posts: 161
Likes: 33
From: Orlando, Florida
2005 E320 CDI (SOLD); 2008 ML320 CDI 4MATIC
Oil kept showing up underneath turbo seal after replacement of CCV & 'bat wing' MAF intake so decided an oil catch can mounted next to passenger side wheel well will at least move any potential leak away from engine valley area where it could potentially be mistaken for something $$$ to fix like turbo pedestal or oil cooler leak. This engine (w/181,500 m) has obvious blow-by as when I loosen oil-fill cap, it tends to dance around & sling oil everywhere @idle. The oil catch can is working well & catches ~50cc every 500 miles or so & 0 leaks around turbo seal now so I can shine a light down into valley & see both turbo pedestal & channel around base of oil cooler have no more oil pooling around them anymore.The red plug that plumbs into batwing has a tendency to back itself out gradually after many miles so clearly there is a fair amount of positive pressure pushing through catch can circuit during higher RPMs but at least it's leaving the oil in the can now. I bought the catch can on ebay for $30 & paid about $50 @ West Marine for 8 feet of 5/8" 200psi hi-temp rubber hose. I believe it's a worthwhile investment for those dealing with oil showing up under turbo seal. 2 5/8" brass barrel connectors & 4 hose clamps are also required to plumb tubing to CCV which must be cut midway to graft oil catch can by-pass circuit into place.
Last edited by PSDCampervan; Jun 4, 2019 at 10:34 PM.
Junior Member
Joined: Jan 2003
Posts: 53
Likes: 2
2008 ML320 CDI
I had the same issue with my 2008 ML320 CDI. After replacing the PCV puck, I still had excessive oil being pulled into the turbo. I recently pulled the intakes in order to replace the oil cooler seals and the amount of oil based gunk in the ports from was shocking. That puck doesn't seem to do its job very well, so now I've also installed a Provent 200 in front of the fuse box.
Newbie
Joined: Nov 2019
Posts: 1
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ML350 BLUETEC
MAF ERROR CODE P0101
Hello Gents,
My check engine light went on and the error code my tester gave me was P0101 MAF air flow sensor.
I began by changing the air filters which were very dirty. I also cleaned both sensors very well. In the process I found oil in the entrance to the turbo.
Yet the check engine light still on and the error code is the same.
Do you think that a defective A642 010 1891 secondary air injection control valve would cause this error ?
Thanks in advance for your help
My check engine light went on and the error code my tester gave me was P0101 MAF air flow sensor.
I began by changing the air filters which were very dirty. I also cleaned both sensors very well. In the process I found oil in the entrance to the turbo.
Yet the check engine light still on and the error code is the same.
Do you think that a defective A642 010 1891 secondary air injection control valve would cause this error ?
Thanks in advance for your help
Last edited by Enrique Falcon; Nov 26, 2019 at 01:54 PM. Reason: didnt finish
Newbie
Joined: May 2019
Posts: 7
Likes: 0
2009 ML320 bluetec
Hello Gents,
My check engine light went on and the error code my tester gave me was P0101 MAF air flow sensor.
I began by changing the air filters which were very dirty. I also cleaned both sensors very well. In the process I found oil in the entrance to the turbo.
Yet the check engine light still on and the error code is the same.
Do you think that a defective A642 010 1891 secondary air injection control valve would cause this error ?
Thanks in advance for your help
My check engine light went on and the error code my tester gave me was P0101 MAF air flow sensor.
I began by changing the air filters which were very dirty. I also cleaned both sensors very well. In the process I found oil in the entrance to the turbo.
Yet the check engine light still on and the error code is the same.
Do you think that a defective A642 010 1891 secondary air injection control valve would cause this error ?
Thanks in advance for your help
Member
Joined: Dec 2013
Posts: 219
Likes: 71
From: Bluffdale
2017 AMG C 43 (W205); 2019 E 300 (W213); 2008 ML 320 CDI (W164)
What exactly is the "Star System Diagnostic", where does it plug in, what does it look like and how different is it to an OBDII reader device?
Newbie
Joined: May 2019
Posts: 7
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2009 ML320 bluetec
it's what the dealer uses to work on Mercedes vehicles. cost is about $20K, which Is why many independent mechanics dont have. this is what I bought and only after I used it I was able to clear and work on egr, run idle drift, and def system issues that are unavoidable on the w164. came with a hard drive and i purchased a Dell with rs232 port for 40 bucks and system works beautifully.about 400 bucks for everything.a must for the DIY...the car parts are expensive. generic readers only pick up generic p series codes, which dont help with this vehicle. a descent scanner that can read better codes of it runs about 300 like the ancel I purchase but limited since it cant erase adaptation, codes, cals, relearn. etc so in short you need the star system if you have this car.
