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      11-08-2018, 06:45 PM   #1
RogerMcGowan
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Oil leak 328i 2013 help

Hey everyone. Bought a 2013 BMW 328i about a week ago. Got the oil smell and smoke coming from the back toward the passenger side. Did the research, figured it was a VCG and had it replaced. Car continued to smoke (not as bad) and still had that smell occasionally. I chalked it up to residual oil burning off, but it wouldn't go away so I decided to really get in there and clean it. Went back out tonight and found this "puddle" so obviously there's still a leak. Assuming the VCG is good, what else could be the issue? Oil pan gasket? OFHG? Something much worse? Thank you.
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      11-08-2018, 06:54 PM   #2
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96,000 miles BTW
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      11-08-2018, 07:15 PM   #3
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OPG or OFHG would be my next guess.

Both should be fairly easy to spot.

Keep us posted on outcome!

How much did you pay for VCG repair?
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      11-08-2018, 07:27 PM   #4
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Quote:
Originally Posted by sspade View Post
OPG or OFHG would be my next guess.

Both should be fairly easy to spot.

Keep us posted on outcome!

How much did you pay for VCG repair?


Thank you for responding. I'm getting both done next week. Even if it's only one of them, I figure at this mileage it won't hurt to just get them both done. VCG replacement was $500 from an INDY.
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      11-08-2018, 07:53 PM   #5
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Forgive my ignorance on all of this. That's the subframe it's dripping onto, right?
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      11-08-2018, 07:59 PM   #6
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Quote:
Originally Posted by RogerMcGowan View Post
Forgive my ignorance on all of this. That's the subframe it's dripping onto, right?
I dont believe thats the subframe. It appears to be made from cast aluminum and the subframe is not made of that material.

Looks like a bracket of sorts.
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      11-10-2018, 11:48 AM   #7
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Thats the downpipe bracket.
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      11-11-2018, 12:09 AM   #8
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Quote:
Originally Posted by RMachuca3d View Post
Thats the downpipe bracket.
Good call.

Its actually not cast aluminum then (like the motor mount in the same pic)...

Just knew it wasnt the subframe.
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      11-11-2018, 10:10 AM   #9
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Quote:
Originally Posted by RMachuca3d View Post
Thats the downpipe bracket.
Thank you.
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      11-25-2018, 06:32 AM   #10
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Turbo oil drain seals are known to leak. Make sure it gets installed the correct way up though.

Otherwise i'd check around the perimeter of the sump.
But if it is genuinely smoking as if the oil was burning off, it would have to be coming from above the cat as i've never seen a sump or turbo oil drain leak bad enough to produce smoke. Oil could be trapped between the head and the heat shield, that is a possibility but that would indicate a lazy repair or a failed rocker cover gasket replacement. You might also want to check the HPFP seal as it can leak too. If it really is residue, it will subside once it is all gone. You can speed up the process by washing the area off with brake cleaner, then letting the engine run for about 20mins to get some decent heat around the area and then spraying it with a hand operated spray bottle of water. The steam will carry away the remaining oil
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      11-27-2018, 09:09 AM   #11
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It ended up being the vacuum pump. Not sure if it had bad seals or of the whole thing was bad, but I replaced the whole thing. The old pump was caked in oil when it was removed.

I purchased one from a junked engine for $200 (regular new price is around $500) and had an indy switch it out for $180. I may have been able to replace it myself, but that is a tight space and I know how impatient I can be. I've had no problems for a couple of days now, so hopefully all is good....for now.
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      11-29-2018, 12:16 AM   #12
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Quote:
Originally Posted by RogerMcGowan View Post
It ended up being the vacuum pump. Not sure if it had bad seals or of the whole thing was bad, but I replaced the whole thing. The old pump was caked in oil when it was removed.

I purchased one from a junked engine for $200 (regular new price is around $500) and had an indy switch it out for $180. I may have been able to replace it myself, but that is a tight space and I know how impatient I can be. I've had no problems for a couple of days now, so hopefully all is good....for now.
From what I remember from being under the car, theres quite a bit of room on that side of the engine bay if you go from beneath, might be an option in the future if you have a couple of jack stands.
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      01-08-2019, 09:56 AM   #13
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Hello guys i have a problem with my 328i n20 too anyone can help pls? How can i put pictures?
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      01-09-2019, 06:34 AM   #14
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Vac pump is replaced from above. The bell housing is too big to access it from beneath. It is definitely a closed eyes job with a bit driver and T40 from memory after you shift some hoses out of the way.
The cowl and brace can be removed for better access.

You would have removed the pump to replace the rocker cover gasket as you can't take the cover off without removing the pump.
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