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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > MAJOR OIL LEAK!!! Crankseal or oil filter housing or gasket????



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      03-04-2016, 05:55 PM   #1
VanBMW335
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Thumbs down MAJOR OIL LEAK!!! Crankseal or oil filter housing or gasket????

So I have been leaking oil on my 2008 335xi coupe for a bit now and I just replaced the serpentine belt as it shredded on me and made the car go dead... Any one know of a cheap person to fix the oil leak for me in Vancity??? Thanks for all the imput in advance cheers!
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      03-04-2016, 05:58 PM   #2
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Pictures of where the oil leak is visible would help.
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      03-04-2016, 06:04 PM   #3
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I have pictures of the papers I put underneath the car to catch the oil but their too large to upload I'll try again... From opening the hood I dont see any oil anywhere or maybe I am not looking properly. Thanks!
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      03-04-2016, 06:12 PM   #4
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      03-04-2016, 06:13 PM   #5
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It's all dripping in the pan for now I guess and falling through there... My Indy who is decent for decent rates said he needs to properly wash the engine and then he has 5 to 8 mins to really see where the leak is coming from
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      03-04-2016, 06:19 PM   #6
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Well you could spray off the engine with brake cleaner once it has cooled off and then run it for 10-20 min using a mirror with an Led light attached to it.
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      03-04-2016, 08:27 PM   #7
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Might try that... The oil level says OK every time I check it even though it's leaking so I don't know what gives!!
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      03-04-2016, 11:47 PM   #8
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Damn .. check that front crank seal.. its probably busted since the serpentine belt shredded
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      03-05-2016, 01:12 AM   #9
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Yea was thinking the same... But it was leaking before the belt busted so not sure if thats the only spot leaking... Should I avoid driving it completely before getting this all fixed or is it still driveable? If I dont drive it for a while will all the oil leak out???
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      03-05-2016, 02:13 AM   #10
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My belt shredded twice. Replaced everything the first time then the second time i noticed belt shreds behind the crank shaft pulley. Ended up replacing the crankshaft seal and dropped the oil pan and found belt shred inside as well. Didnt leak oil but i wouldnt risk it. Should be visible if you take your fan out. If not visible id advise feeling behind the pulley or taking the pulley off to see. Id avoid driving if its leaking that bad.

Last edited by Gamma6; 03-05-2016 at 02:21 AM.
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      03-05-2016, 02:05 PM   #11
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Im getting a paint job done on Monday for some scratches on the car... They said theyll need it for a couple weeks its covered by insurance.. Just hope all the oil hasnt leaked out on to their floor when I pick it up lol
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      03-05-2016, 02:06 PM   #12
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I drove it for a while yesterday and it seems like its driving normal.. and the oil level is still saying OK .. But yes wont be driving it until Monday now
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      03-05-2016, 04:53 PM   #13
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Did you add any oil? I wouldnt be trusting the oil sensor if it was leaking that bad and the sensor was saying that it was full.

Pics of the engine bay?
Did you remove the engine cover to see if it was the valve cover gasket?
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      03-05-2016, 06:06 PM   #14
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I wouldn't drive it at all until you're 100% sure no belt strands made it past the front crank seal. The last thing you want is a clogged oil pickup and catastrophic engine failure as a result.
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      03-05-2016, 06:18 PM   #15
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I havent added any oil... Will check under the hood if I can see anything but Im not much of a DIY guy when it comes to this stuff.. Funny thing is car is driving pretty normal after changing the serpentine belt and also replaced some thin hose line that was connected to the coolant thing... They might have added too much oil last time I topped it up a couple weeks ago... Its running so decent now that its basically a ticking time baaah... Lol
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      03-05-2016, 06:19 PM   #16
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The guy who replaced the belt took out alot of the shredded belt pieces and said he had to remove both pullies as it had gone into there and he had to take them out
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      03-05-2016, 06:46 PM   #17
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A belt shred followed by a large oil leak = don't start the car until the oil pan is removed.
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      03-05-2016, 06:52 PM   #18
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Like said above, I'd replace the front seal, pull the oil pan and check for belt material. That will take care of three potential problems. Front seal leaking, oil pan leaking and oil pickup clogging and destroying the engine. Then if it's still leaking, it's either the rear seal or oil running down from the valve cover gasket and/or oil filter housing/oil cooler adapter housing.
The oil pan can be taken out by raising the car, supporting engine from the top and simply taking out the four engine mount bolts and six subframe bolts. That gives enough room to remove the pan and replace the gasket in one piece. Pan should be out in under an hour!
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      03-05-2016, 07:04 PM   #19
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Thanks thats great advice and will do...as for the oil level sensor I had that replaced a few months back when I changed the spark plugs and ignition coils when they all started misfiring... Soo not sure why the oil sensor wouldnt be working... But nothings normal in this can of worms!
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      03-05-2016, 07:06 PM   #20
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The oil leak was there before the belt shredded and was told that the oil leak detoriated the belt ... The oil leak is alot worse now then before
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      03-06-2016, 11:39 PM   #21
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Looks like its the front seal... Cars oil level still says ok but its shaking a bit different and funny when im stopped at a light...will get it fixed tomorrow
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      03-07-2016, 01:26 AM   #22
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I've been checking the oil sensor everyday for past week, tonight it finally showed up that it's down a little. I am not running the car for atleast a couple weeks as it's getting painted... Do you think it'll be drivable to the mechanic shop or will all the oil eventually drip out? Looks like is coming from the front seal maybe rear as well... It's leaking bad now
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