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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 12-08-2009, 04:29 PM
Starless Starless is offline
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Smile My CVV (Oil Separator) DIY Journey in Pictures

This is the journey I would not take again. Major PITA. Oil separator is a "tricky sucker" like somebody commented. But I hope the pictures of every step of the way will make this diy a little easier for somebody else. I followed these 2 wonderful DIYs that contain everything you need to know:

The one by Lbert - http://www.bimmerfest.com/forums/sho...+oil+separator

And the one by djmcmath - http://forum.e46fanatics.com/showthr...123&highlight=

I took more pictures and included my comments making it a separate DIY. Enjoy!








































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  #2  
Old 12-08-2009, 04:45 PM
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MicahO MicahO is offline
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Dude - Out-effing-standing job, well written and documented, another home run. Wiki-fy that beeyotch!

(and since I will be doing this some time in the next ~6 months, THANKS!
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  #3  
Old 12-08-2009, 04:58 PM
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Quote:
Originally Posted by MicahO View Post
Dude - Out-effing-standing job, well written and documented, another home run. Wiki-fy that beeyotch!

(and since I will be doing this some time in the next ~6 months, THANKS!
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  #4  
Old 12-08-2009, 05:08 PM
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AlboBMW AlboBMW is offline
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good job.

I propose to merge this, with the other CCV thread, as there are many good advices in that thread.


Like the OP, my CCV was not leaking but it was good to get that out of the way.

Also for future seekers, I would like to link this thread too: http://forum.e46fanatics.com/showthr...&highlight=ccv

it has some good pics too.
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Last edited by AlboBMW; 12-08-2009 at 05:11 PM.
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  #5  
Old 12-08-2009, 07:06 PM
Starless Starless is offline
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Thanks, guys!

I think I'm done with preventive maintenance after this one for a while. This one got me
I was also hoping to improve my low idle situation (my idle in drive is 625 rpm and I'd like to see it at 700rpm). Obviously cleaned ICV and throttle body, cheched DISA. All vacuum lines seem to be good. But alas...Must be torque converter. What ever...
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  #6  
Old 12-08-2009, 07:13 PM
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av98 av98 is offline
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Great DIY! Now grab a cold one you deserve it or withthe cold weather maybe soup will work best.
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  #7  
Old 12-08-2009, 07:24 PM
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Very good write up!!

Question.... why didn't you take out the intake manifold??
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  #8  
Old 12-08-2009, 07:33 PM
Starless Starless is offline
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Originally Posted by Solidjake View Post
Very good write up!!

Question.... why didn't you take out the intake manifold??
Thank you.

For 2 reasons: you can change the separator without removing the intake manifold. It's a pain, but do-able. And second being the difficulty level of the job of removing the manifold. It would take me like 8 more hours to do that. Here is what djmcmath from Fanatics says about the job:

"Removing the intake manifold. This is a bear. You'll need to have a new gasket set and a torque wrench that's good for 11ft-lbs (you really want these torqued right), as well as a magnet-on-a-stick, some small screwdrivers, a pair of circlip pliers, and probably some other stuff. I should emphasize the difficulty here: I've rebuilt transmissions, I've pulled engines from cars with nothing but a floor jack and a socket set by the side of the freeway, I've built whole brake and suspension systems from the ground up. But even with all that experience, I dorked this process up twice in a row. If this is your daily driver and you have to drive it tomorrow, and you're not entirely confident about how this process will work, maybe pulling the manifold isn't for you tonight"

So, I left it alone.

Last edited by Starless; 12-08-2009 at 07:36 PM.
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  #9  
Old 12-08-2009, 07:50 PM
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o0o0o00o0o
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  #10  
Old 12-09-2009, 06:41 AM
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Great write up! I also opted to leave the intake in place on this one. I pull wrenches for a living and found this to be a challenging job, kudos to all who take it on. Thank you Starless!
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  #11  
Old 12-09-2009, 07:42 AM
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Excellent job, Alex....props to you, mang !
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  #12  
Old 12-09-2009, 08:43 AM
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Excellent write-up and pictures.
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  #13  
Old 12-09-2009, 12:00 PM
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You make it look so easy.
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  #14  
Old 12-09-2009, 12:37 PM
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Man, thats a really good DIY!! This DIY makes it look easy but you can still see its a tough job!
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  #15  
Old 12-09-2009, 12:54 PM
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Quote:
Originally Posted by 968RACER View Post
You make it look so easy.
Quote:
Originally Posted by spazmataz View Post
Man, thats a really good DIY!! This DIY makes it look easy but you can still see its a tough job!
Well, taking stuff apart is easy. It's the OS itself that's difficult to remove and even more difficult to install mainly due to it's extremely inconvenient to reach location deep under the intake manifold in a very tight space. On the photos you can not really see the depth but the the wrench with the torx bit at the end on one of the pictures gives you an idea. And you have to be positive that all the OS hoses are attached securely to it otherwise you'll have a leak and you'll need to start all over again which, trust me, you do not want to do. Not very difficult technically but requires lots of patience and attention. That's it.
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  #16  
Old 12-15-2009, 04:34 PM
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Thanks for this writeup...I used it extensively today in doing this on my E39...
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  #17  
Old 12-15-2009, 06:24 PM
mujjuman mujjuman is offline
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great job.

looks way too complicated for my patience lol
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  #18  
Old 12-15-2009, 07:47 PM
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Fantastic DIY! I'll be using this one for sure when it's time.
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  #19  
Old 12-28-2009, 05:44 AM
aemedic aemedic is offline
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Very Helpful! I used this last night, it makes it so much easier to have a pictorial guide.
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  #20  
Old 12-28-2009, 09:17 AM
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I assume this process is similar on a 1995 525i E34? Can anyone confirm? I did the vanos rebuild and broke the rubber hose that goes from vanos to cvv. I could not retrieve the distal end to attempt a reconnect. At 192K the cvv is long overdue anyway.
Great write up!
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  #21  
Old 12-28-2009, 11:46 AM
aemedic aemedic is offline
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While I can't confirm that they are similar, I did my CCV for the same reason, those plastic tubes are very brittle later after a few miles... Because it broke I learned all about the CCV and in the process found that the tube that attaches to the dipstick was completely clogged in the metal portion of the dipstick.
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  #22  
Old 01-02-2010, 06:37 AM
BMW#1_323i BMW#1_323i is offline
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Great job on the DIY Alex...I just did this yesterday and you're DIY was key.

I would like to point out one observation though. On re-installation, I found it easier to install hose #2 first while in place in the car as this hose must be rotated.

This allowed me to connect all hoses within 10 minutes!

Let me point out that I have a MY 2000 323i with an M52 so install may be a little different.

Again, thanks for the DIY, Great Job!

Last edited by MMME30W; 08-10-2010 at 05:58 PM. Reason: Snip duplicate post quote - readability improvement
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  #23  
Old 01-02-2010, 12:35 PM
Starless Starless is offline
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Originally Posted by BMW#1_323i View Post
Great job on the DIY Alex...I just did this yesterday and you're DIY was key.

I would like to point out one observation though. On re-installation, I found it easier to install hose #2 first while in place in the car as this hose must be rotated.

This allowed me to connect all hoses within 10 minutes!

Let me point out that I have a MY 2000 323i with an M52 so install may be a little different.

Again, thanks for the DIY, Great Job!
You are very welcome. Glad everything worked out for you. As for what hose to connect first, it's whatever works better for you. I tried hose 2 first and had no luck, but I'm glad it took you 10minutes, it took me much longer :-)
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  #24  
Old 01-02-2010, 04:49 PM
dsenier dsenier is offline
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What failure caused you to do this job?
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  #25  
Old 01-02-2010, 05:37 PM
mrodoc mrodoc is offline
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I'm grateful for all the great pics. I'm fortunate that I have a second bimmer to drive, so when I get frustrated I can just walk away and return the next day, fresh. I broke the vanos down into four days, and it went quite well. But with the vanos there wasn't any really tight spots. Everything is easily accessable. From what I've read this cvv is going to be a bear.
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