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Is this too much blowby? Om642

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Old Mar 8, 2019 | 02:02 PM
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Ml350 bluetec
Is this too much blowby? Om642
I know these engines are looser than snot, but it seems like a lot. At operating temprature there is enough force to the air to hold a 2 sheets of paper completely off the hose.

ML 350 bluetec om642 178k tuned no dpf

I wonder if somehow the egr is stuck open? What do you all think?

https://youtu.be/uoJt1HmQn3A
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Old Mar 8, 2019 | 03:15 PM
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1922 Ford Model T / no OBD
I always do the test on oil fill hole. All my diesels will not blow single napkin.
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Old Mar 9, 2019 | 03:37 PM
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Ml350 bluetec
Originally Posted by kajtek1
I always do the test on oil fill hole. All my diesels will not blow single napkin.
On this diesel it flings oil out the oil fill when the cap is removed.
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Old Mar 9, 2019 | 04:27 PM
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2013 ML350 Bluetec
Seems like an oil analysis would be money well spent.
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Old Mar 9, 2019 | 08:25 PM
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1922 Ford Model T / no OBD
Originally Posted by Towmater
On this diesel it flings oil out the oil fill when the cap is removed.
Not when you put napkin over it.
When you have excessive blowby, compression test or smoothness test is in order.
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Old Mar 11, 2019 | 03:37 PM
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Ml350
Originally Posted by rapidoxidation
Seems like an oil analysis would be money well spent.
Thank you, who do you recommend?
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Old Mar 11, 2019 | 04:54 PM
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2012 X6 35i Sport, 2013 ML 350 BT, 2019 4Runner TRD Pro, 2020 CRV-AWD
Blackstone Labs is the one I hear about the most, I've only dealt with them once myself.
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Old Mar 11, 2019 | 05:17 PM
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Originally Posted by Anthony Porta
Thank you, who do you recommend?
Blackstone, used them like 6 times for different cars. Like them.
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Old Mar 11, 2019 | 05:52 PM
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1922 Ford Model T / no OBD
Blackstone will send you sample containers with prepaid shipping for sending them back. You can order on the net, or call them.
They are not very fast, so you have to be patient with them.
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Old Apr 21, 2019 | 03:37 PM
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Ml350 bluetec
Oil report in. oddly enough it looks good.
Last edited by Towmater; Jan 29, 2020 at 03:37 PM.
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Old Apr 22, 2019 | 12:00 AM
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1922 Ford Model T / no OBD
What oil did you use? Doesn't look like synthetic.
It is good report, what you want?
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Old May 21, 2019 | 07:42 PM
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Ml350 bluetec
Originally Posted by kajtek1
What oil did you use? Doesn't look like synthetic.
It is good report, what you want?

To know why I use a quart every 500 miles. more when cold and why it smokes at high rpm...
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Old May 23, 2019 | 10:29 PM
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Ml350 bluetec
Still digging. Found this lovely crud in the egr pipe.
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Old Jun 4, 2019 | 11:42 PM
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2012 S350 Bluetec 4MATIC; 2011 ML350; 2005 C230k;
Replace PCV valve and install oil catch can. This should help.
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Old Jun 4, 2019 | 11:51 PM
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Ml350 bluetec
Originally Posted by artim808
Replace PCV valve and install oil catch can. This should help.
I already have a catch can. Do you have the pcv part number by chance?
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Old Jun 5, 2019 | 01:41 AM
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2012 S350 Bluetec 4MATIC; 2011 ML350; 2005 C230k;
I think this is the one for your car.
https://www.fcpeuro.com/products/mer...mer-6420102391

How you installed catch can? Did you cut the hose from pcv valve to turbo intake?
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Old Jun 5, 2019 | 05:49 PM
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Ml350 bluetec
Originally Posted by artim808
I think this is the one for your car.
https://www.fcpeuro.com/products/mer...mer-6420102391

How you installed catch can? Did you cut the hose from pcv valve to turbo intake?
Yup.
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