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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Another Oil Filter Housing Leak/Intake Valve Deep Cleaning (with DYNOS)



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      03-27-2011, 10:45 PM   #1
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Exclamation Another Oil Filter Housing Leak/Intake Valve Deep Cleaning (with DYNOS)

I hate to tell you guys, but it's not if the oil filter housing gasket will fail, it will be when.
It's happening more and more and there's a DIY already but I thought I would add some more pictures.

Since the Intake Manifold needs to come out, I thought I would clean the valves.
It really wasn't that much work, but it was tedious.

This is what I used:

-A crap load of Brake Cleaner (I used 2 cans but probably could have used more)
-A long flat head screw driver to scrape the valves
-A stainless steel wire brush to clean the ports
-Shop Vac to suck out any excess brake cleaner and dirt/grime

If I were to do it again:

-A longer flat had screwdriver with a smaller head
-A long long brush. A guy at work told me about a rifle cleaning brush. That's a great idea.

Something to keep in mind:
My friend is a BMW tech and said that when they clean the valves, they bring each cylinder to top dead center and put in a strong cleaning solution and let it sit. He said that this slution is a lot stronger than carb cleaner. They do not scrape anything because they don't want to ruin the finish on the valves, but I think that if you were to use a softer brush then everything will be fine. It's definitely something to think about though.

Dynos of the power differences are posted on post number 71.
http://www.e90post.com/forums/showpo...0&postcount=71


Here are some pics.

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      03-27-2011, 10:59 PM   #2
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Awesome! Great work..
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      03-27-2011, 11:00 PM   #3
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Thanks for sharing...the dirty valves look scary!! what was your process for cleaning?
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      03-27-2011, 11:11 PM   #4
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Quote:
Originally Posted by Perfectus View Post
Thanks for sharing...the dirty valves look scary!! what was your process for cleaning?
+1

Never seem to get to my camera out when I'm doing something on the car. Big props to everyone who take a break, whip out the camera and then share!
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      03-27-2011, 11:26 PM   #5
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Great work.
Anyone familiar with dirty valves? How do his valves compare to the norm of dirty valves on other cars?
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      03-27-2011, 11:32 PM   #6
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Send a message via AIM to PKumarM3
wow that is pretty bad. if i am not mistaken, ur at around 90k miles no?

i also recall u seafoamed recently? damn my friend. damn
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      03-28-2011, 12:01 AM   #7
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Has anyone removed the head?
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      03-28-2011, 12:20 AM   #8
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Quote:
Originally Posted by Perfectus View Post
Thanks for sharing...the dirty valves look scary!! what was your process for cleaning?
+1
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      03-28-2011, 12:23 AM   #9
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Oh, and did you feel any difference after the cleaning?
Thx
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      03-28-2011, 01:12 AM   #10
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I'm next on this one. can you post the parts purchased Gasket part numbers?

I have: 11427537293 - filter housing gasket. did you replace the intake gaskets?
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      03-28-2011, 04:52 AM   #11
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How many miles have you been on meth?
How did you clean the valves?
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      03-28-2011, 08:42 AM   #12
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Sorry guys for not showing what I used but I edited the op.
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      03-28-2011, 08:47 AM   #13
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Nice write up. I just took my car in to BMW because my car is eating oil quickly. It went from being topped off to saying I need to add a quart in 700 miles. I told them I think it's the oil filter housing gasket, and the SA said it was unlikely, although I'm pretty damn sure it's the problem. Hopefully they do actually check it like I told them. *crosses fingers*
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      03-28-2011, 08:52 AM   #14
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They actually did not look that bad compaired to other pics i have seen of Audi RS4 DI engines after halv the mileage.
Great work as usual Mr. 5!
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      03-28-2011, 09:03 AM   #15
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Quote:
Originally Posted by maxnix View Post
Informative post! So do we get to see clean valve stems in steps?

Did the after market oil coolers contribute to this problem?
I don't understand what you are asking about the valve stems.
No oil cooler will contribute to this.

Quote:
Originally Posted by jzepeda View Post
I'm next on this one. can you post the parts purchased Gasket part numbers?

I have: 11427537293 - filter housing gasket. did you replace the intake gaskets?
I did not replace the intake gaskets. They were completely fine.
I just made sure that the surface of the head was very clean and I took a little bit of oil and made sure each gasket was moist.

Quote:
Originally Posted by Big Tom View Post
How many miles have you been on meth?
How did you clean the valves?
I have about 25-30k miles on meth.
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      03-28-2011, 09:18 AM   #16
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How many total miles on car? What torque on oil filter housing?
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      03-28-2011, 09:36 AM   #17
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Great info. Thanks for the pictures and writeup! I'll be on this in a couple of weeks I think. Looks like a good Saturday project.
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      03-28-2011, 09:46 AM   #18
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Quote:
Originally Posted by momstmg78 View Post
How many total miles on car? What torque on oil filter housing?
I have just under 95k miles.
I've had a catch can since 20k miles.
19 Nm

Quote:
Originally Posted by maxnix View Post
So you didn't clean the exhaust valve stems? But you said in the edited post you did, so just no pictures?

I recall you had removed this filter assembly when you installed the last after market oil cooler, so I was wondering if that increased oil pressure in the housing assembly or if it was not torqued on correctly when it was replaced? Or was it just gasket deterioration? Any contribution form methanol which is notoriously bad for rubber?
I highly doubt I mentioned anything about exhaust valves. How could I clean the exahust valve stems with only the intake manifold off and why would I want to? The intake valves are the issue with this engine.


The gaskets are the issue here. That's why we are seeing so many failures.
it has nothing to do with what oil cooler one has.
Look at the DIY and you'll see that the guy that posted it had his fail and he doesn't even have an OC. lol
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      03-28-2011, 09:48 AM   #19
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Any thoughts on using high temp silicon gasket maker as a gasket for the housing. In all likelihood the gaskets we use to replace the damaged one will fail as well.

Perhaps a high temp option may prevent that in the future. There is a nice groove to follow so there would probably be minimal spillage.
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      03-28-2011, 09:54 AM   #20
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Guys/gals don't forget to replace the bolts with new ones...
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      03-28-2011, 09:59 AM   #21
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Quote:
Originally Posted by Mr. 5 View Post
I have just under 95k miles.
I've had a catch can since 20k miles.
19 Nm



I highly doubt I mentioned anything about exhaust valves. How could I clean the exahust valve stems with only the intake manifold off and why would I want to? The intake valves are the issue with this engine.


The gaskets are the issue here. That's why we are seeing so many failures.
it has nothing to do with what oil cooler one has.
Look at the DIY and you'll see that the guy that posted it had his fail and he doesn't even have an OC. lol
Not 22 Nm?
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      03-28-2011, 10:02 AM   #22
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Mine looked worse.
Bolts are cheap but I used some I found at Loews. 7x1.0x50. fit fine. Not sure what the repercussions of using headed bolts instead 2 sided bmw bolts. Mine snapped on the third replacement of the intake manifold so I replaced them with the bolts from Lowes.

How did you get the plastic bank of wires off the bottom of the manifold? I saw some clips but couldn't get them to release??
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