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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 01-20-2013, 08:29 AM
Mamij Mamij is offline
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Mein Auto: BMW 320i M52 1996
Oil inside throttle body?

Hi Guys,

I have a 320i M52 2.0. Today I noticed some small amount of oil inside the throttle body.
I have checked the CCV and there are no hoses going to the throttle body from the CCV, so how is oil suppose to get in there???

Also to the left of the throttle body there are 2 hoses and one under the body going from the purge valve, so I dont understand how oil can come inside the throttle body?

thanks,

rgds,

Mario

Last edited by Mamij; 01-20-2013 at 10:14 AM.
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  #2  
Old 01-20-2013, 09:50 AM
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dc_wright dc_wright is offline
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Mein Auto: '96 328iC, '04 325Ci
The hose from the cylinder head goes to an oil separator. From the separator there's a hose to your intake manifold and a drain hose back into the oil pan at the dip stick location. If your oil separator isn't functioning correctly you'll pull oil up into the intake.
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Old 01-20-2013, 09:57 AM
Mamij Mamij is offline
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Quote:
Originally Posted by dc_wright View Post
The hose from the cylinder head goes to an oil separator. From the separator there's a hose to your intake manifold and a drain hose back into the oil pan at the dip stick location. If your oil separator isn't functioning correctly you'll pull oil up into the intake.
I've had the ICV removed from the manifold, including the MAF and filter, and still I could't see that hose leading to the intake manifold, is it really neccesary to remove the throttle body to get the separator out including the hoses?
On realoem I can only see 2 hoses at the diagram for the CCV

here is a link:

http://www.google.dk/imgres?um=1&hl=...w=1320&bih=663

Last edited by Mamij; 01-20-2013 at 10:36 AM.
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Old 01-20-2013, 12:57 PM
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dc_wright dc_wright is offline
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I apologize for not being completely clear. There are 3 connections to the oil separator. The hose from the cylinder head, the hose to the dip stick and the grommet where the oil separator connects to the intake.

http://tinyurl.com/ba2k3ne

Here's a photo that shows where the separator connects to the intake. This is on a 5 series but it's still an M52 engine. Also here's a link to the DIY the photo came from.
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Old 01-20-2013, 01:44 PM
Mamij Mamij is offline
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Mein Auto: BMW 320i M52 1996
Quote:
Originally Posted by dc_wright View Post
I apologize for not being completely clear. There are 3 connections to the oil separator. The hose from the cylinder head, the hose to the dip stick and the grommet where the oil separator connects to the intake.

http://tinyurl.com/ba2k3ne

Here's a photo that shows where the separator connects to the intake. This is on a 5 series but it's still an M52 engine. Also here's a link to the DIY the photo came from.
Thanks for the reply. But can you tell me the 2 hoses right under the manifold where it states to replace them both with standard vaccum, where do they start from and what do they connect to?
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