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Is this too much blowby? Om642

 
Old 03-08-2019, 02:02 PM
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Ml350
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 03-08-2019, 03:15 PM
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I always do the test on oil fill hole. All my diesels will not blow single napkin.
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Old 03-09-2019, 03:37 PM
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Originally Posted by kajtek1 View Post
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 03-09-2019, 04:27 PM
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2005 E320 CDI
Seems like an oil analysis would be money well spent.
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Old 03-09-2019, 08:25 PM
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Originally Posted by Towmater View Post
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 03-11-2019, 03:37 PM
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Originally Posted by rapidoxidation View Post
Seems like an oil analysis would be money well spent.
Thank you, who do you recommend?
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Old 03-11-2019, 04:54 PM
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2007 FJ Cruiser, 2012 X6 35i Sport, 2013 ML 350 BT
Blackstone Labs is the one I hear about the most, I've only dealt with them once myself.
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Old 03-11-2019, 05:17 PM
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2014 ML 350 BLUETEC
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 03-11-2019, 05:52 PM
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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 04-21-2019, 03:37 PM
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Oil report in. oddly enough it looks good.
Attached Files
File Type: pdf
10 ML350-190417.pdf (17.3 KB, 26 views)
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Old 04-22-2019, 12:00 AM
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What oil did you use? Doesn't look like synthetic.
It is good report, what you want?
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Old 05-21-2019, 07:42 PM
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Originally Posted by kajtek1 View Post
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 05-23-2019, 10:29 PM
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Still digging. Found this lovely crud in the egr pipe.
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Old 06-04-2019, 11:42 PM
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2012 S350 Bluetec 4MATIC
Replace PCV valve and install oil catch can. This should help.
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Old 06-04-2019, 11:51 PM
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Originally Posted by artim808 View Post
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 06-05-2019, 01:41 AM
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2012 S350 Bluetec 4MATIC
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 06-05-2019, 05:49 PM
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Originally Posted by artim808 View Post
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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