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Old Jun 10, 2015, 01:35 PM
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Anybody replace PCV valve?

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Old Jan 21, 2015 | 01:18 PM
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LMA1973
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1999 ML430
Anybody replace PCV valve?
I just looked-is that it at the back of the engine down under the coolant reservoir? What a ***** to get to! Any tips on getting to this thing?

Thanks
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Old Jan 22, 2015 | 06:59 AM
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2002 ML 320 & 2006 ML500
Are you referring to part #158?.
Attached Thumbnails Anybody replace PCV valve?-2015-01-22_065849.jpg  
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Old Jan 22, 2015 | 05:09 PM
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LMA1973
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1999 ML430
Yep-exactly. Part 158. Its a pain to get to it seems-i tried to yesterday just for kicks before ordering the part.
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Old Jan 22, 2015 | 06:34 PM
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Maj. Dundee
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2002 ML 320 & 2006 ML500
That 158 part is just a hose junction, it is not a PCV Valve. Below are the instructions to remove the air intake pipe.

https://mbworld.org/forums/m-class-w...ml#post6240193

You must be very careful pressing down the lower catch tab. Instead of using a screwdriver using your thumb to pull it down.
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Old Jan 22, 2015 | 09:13 PM
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1999 ML430
Thanks for the help Dundee. The reason i was asking abou the PCV is i have severe oil consumption (with no smoke and no leakage) and someone suggested changing the PCV?
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Old Jan 23, 2015 | 07:21 AM
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Maj. Dundee
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2002 ML 320 & 2006 ML500
Originally Posted by LMA1973
Thanks for the help Dundee. The reason i was asking abou the PCV is i have severe oil consumption (with no smoke and no leakage) and someone suggested changing the PCV?
ML's do not have a PCV Valve. You shouldn't have started a new thread on the same problem. You should have posted your question on the original thread you started.

https://mbworld.org/forums/m-class-w...e-no-leak.html

I suggested that you remove the left valve cover to take a look. If you can't do it yourself, you will have to pay a mech. to do it.
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