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Would a bad pcv valve cause oil burning?

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Would a bad pcv valve cause oil burning?

 
Old 05-23-2018, 07:15 PM
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Would a bad pcv valve cause oil burning?

I'm trying to decide if I need to bring the car into the dealer or not.

I moved the manifold flap in front of the engine back and forth because I felt it was not moving freely and want to rule that out first.

I'm getting some blue smoke on passenger side.its pretty bad after a few min on idle and after I rev it a little.

other than that the car runs good and no miss fires or codes
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Old 05-24-2018, 10:10 AM
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Intredasted in this too. From my armchair mechanic “research”, the oil get sucked through on decel and liftoff and gets burned on the exhaust. Would a catch can fix the symptoms a bit? Also, does this oil get sucked through cylinder walls?
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Old 05-24-2018, 12:32 PM
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I ordered a new valve. Will see what happens
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Old 05-24-2018, 01:57 PM
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Bad PCV would cause oil burning on both banks equally, no....?
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Old 05-24-2018, 02:07 PM
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Originally Posted by Celicasaur View Post
Bad PCV would cause oil burning on both banks equally, no....?
yea makes sense but it plugs into the side that is slightly burning oil.

or there is some oil build up in the manifold.will see when I open her up.

I hope its nothing serious
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Old 05-24-2018, 02:11 PM
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OP good luck with the new valve and please update with results!. Also, whats your approx rate of oil consumption? Ive been filling up 1 L every 2000-3000 KM it seems (mostly driving in M without too much consideration for economy)
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Old 05-24-2018, 02:13 PM
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Originally Posted by NotABaller View Post
OP good luck with the new valve and please update with results!. Also, whats your approx rate of oil consumption? Ive been filling up 1 L every 2000-3000 KM it seems (mostly driving in M without too much consideration for economy)
I run 5w40 8100 and honestly I dont need to top it off.i say maybe a half bottle by 3k miles.the car just started doing this a few days ago so I'm sure I'll have to add more now
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Old 05-24-2018, 11:14 PM
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I got the manifold off the car.lots of oil on the side that is burning it.

doing injectors and maybe get some spacers. I have a new pcv valve on the way.

https://www.instagram.com/p/BjLtDzEhrDC/?utm_source=ig_share_sheet&igshid=1d6mwatjaxrgq

Last edited by skratch77; 05-24-2018 at 11:21 PM.
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Old 05-25-2018, 09:34 AM
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Originally Posted by skratch77 View Post
https://www.instagram.com/p/BjLtDzEh...=1d6mwatjaxrgqI got the manifold off the car.lots of oil on the side that is burning it.

doing injectors and maybe get some spacers. I have a new pcv valve on the way.

https://www.instagram.com/p/BjLtDzEhrDC/?utm_source=ig_share_sheet&igshid=1d6mwatjaxrgq
manifold removal can DIY for beginners?
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Old 05-25-2018, 12:24 PM
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Originally Posted by NotABaller View Post

manifold removal can DIY for beginners?
I mean it's not that hard.if your going to do it you might as well buy new fuel injectors and gaskets.

my injectors were really bad
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Old 05-25-2018, 02:18 PM
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Originally Posted by NotABaller View Post

manifold removal can DIY for beginners?
BLKROKT was able to do it so there's your difficulty answer...
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Old 05-26-2018, 03:45 PM
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Originally Posted by NotABaller View Post

manifold removal can DIY for beginners?
yeah. Easy. Took me an hour with no experience and taking pics.

https://mbworld.org/forums/c63-amg-w...valve-diy.html
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Old 05-26-2018, 04:02 PM
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Make sure you open up the manifold and clean it up also.
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Old 05-27-2018, 02:02 PM
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Originally Posted by skratch77 View Post
Make sure you open up the manifold and clean it up also.
when you open the manifold what do you use to reseal it or do they sell a gasket kit.
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Old 05-27-2018, 09:24 PM
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Originally Posted by iShootYou View Post


when you open the manifold what do you use to reseal it or do they sell a gasket kit.
There is one rubber gasket around the throttle bodies but it pretty heavy duty so I'm not changing it.

you will need new gaskets that go on the engine block between the manifold tho.

here is a video of the inside.


Last edited by skratch77; 05-27-2018 at 09:32 PM.
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Old 05-28-2018, 09:53 AM
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Originally Posted by skratch77 View Post
There is one rubber gasket around the throttle bodies but it pretty heavy duty so I'm not changing it.

you will need new gaskets that go on the engine block between the manifold tho.

here is a video of the inside.

https://youtu.be/MI6d-H62CaQ
I've replaced my IM Gasket before, I was just wasn't sure about the gasket in the IM. Are you planning on hot tanking the IM, if not how do you plan on cleaning it?
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Old 05-28-2018, 11:25 AM
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Originally Posted by iShootYou View Post
I've replaced my IM Gasket before, I was just wasn't sure about the gasket in the IM. Are you planning on hot tanking the IM, if not how do you plan on cleaning it?
I spent about an hour wiping it down with rags and let it sit for a day to let all the oil drip out the runners
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