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03-10-2017, 05:23 AM | #1 |
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Help! My M3 is leaking oil!
Just picked the car up a week ago and noticed it's leaking oil! Traced the leak and it seems to be coming from oil housing unit. Could it be the gasket???
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03-10-2017, 05:29 AM | #2 |
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03-10-2017, 06:01 AM | #5 |
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First make sure the cap is screwed on tight. If it is, then remove it and check if the o-ring around the cap is in place and isn't twisted. These usually come with a replacement oil filter. It wouldn't hurt to just get a new filter and replace it and the o-rings and torque the cap correctly. If that doesn't work you may need to replace the cap or the housing.
You can see the o-ring in the filter kit: http://www.autohausaz.com/search/pn....08UaAm6P8P8HAQ |
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03-10-2017, 08:07 AM | #8 |
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Check the cap of the oil filter housing. There is a o-ring around the cap that could be out of place causing the leak. If there is oil on the oil filter housing I would say the cap is the issue.
If you see oil under the oil filter housing I would say the oil filter housing gasket is leaking. Which is a gasket that seals the mating surface of the housing against the engine. |
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03-10-2017, 09:50 AM | #9 |
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Drives: 2011 MCB E92 M3
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This. My wife's X3 got an oil change and they didn't fully tighten it and oil was all over the place afterwards. If it's completely tightened I'd get a new gasket.
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03-10-2017, 09:50 AM | #10 |
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So i had the same issue. Noticed oil leak on my belly pand and it tracked to oil filter housing. I thought it was oil filter cap O-ring which was not. Then replaced oil cooling hoses O-rings, still leaked. It ended up being a crack in oil filter housing above oil cooling ports. It only leaked on cold start. I had to replace the oil filter housing which is pain in a a$$. You will have to remove pretty much everything from the front inculding radiatior and much more. So just make sure you do a right inspection and O-rings before anything else.
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03-14-2017, 09:41 PM | #11 | |
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Did you do the replacement yourself? I saw somewhere that the factory procedures mentions that you have to remove the harmonic balancer. Were you able to do so without removing it? EDIT: Doesn't appear as if you have to do so from another thread, will reference it below (although the BMW service procedure specifies it...)
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2008 E90 M3 Jerez Black
2007 Mini Cooper S (The Radio-Active Concert Hall) 1993 RX-7 (self fabricated parts/far from stock) 1990 MX-5 turbo (self fabricated parts/far from stock) Last edited by bond_007; 03-14-2017 at 10:22 PM.. Reason: Additional info on seal replacement |
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03-14-2017, 10:19 PM | #12 |
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...this thread appears to have some good info on the seal replacement:
http://www.m3post.com/forums/showthr...ght=oil+filter
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03-16-2017, 12:35 PM | #13 |
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How to diagnose:
After completing the oil change (so the oil filter cartridge would have a new O-ring), I "hosed" down the oil residue near the oil filter and the oil filter cap last night with cleaner. As soon as the engine was started, I started to see the car "bleeding" (weeping) oil from what appears to be the metal-metal junction of the oil filter assembly to the block. Too dark to video it so others can see. Looks like at a minimum, I need to replace the gasket.
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03-16-2017, 03:22 PM | #14 | |
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03-16-2017, 07:18 PM | #15 | |
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03-18-2017, 10:46 AM | #16 |
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Yikes! I posted in the other thread to see if cmtemauricio has further thoughts as I have been told anywhere from 3 to 8 hours to do it by local indy shops...
No room for an impact wrench to remove the damper bolts?
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03-18-2017, 02:47 PM | #17 |
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Yeah i could of done it in a day or so if I had all the right tools and no complications during the process. And yes I was thinking to use an impact wrench but I don't think clearance between those 4 bolts and ac radiator was enough for it to fit. It was one of the ideas to get it off including welding a nut in on top of it lol. You could try but u won't be able to hold it against bolts tight enough for it not to slip back due to clearance restriction that's if u were to find small enough impact to fit in there. Or u can take bumper off lol then u good. Honestly if I'd have to do it again I'd go straight to grinding it off and buying new bolts(just me thought).
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03-20-2017, 04:56 PM | #18 | |
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Nothing else will fit down there, then you just need to break it loose and it will come out by hand.
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03-20-2017, 05:45 PM | #19 | |
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03-20-2017, 05:50 PM | #20 | ||
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I was digging thru my tool box for a while until I came up with that solution. It worked perfectly though, 30k miles later and no more leaks still.
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03-20-2017, 06:01 PM | #21 |
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UPDATE: Gave my car back to dealer since NYS law requires 30 day power train warranty I figured why not just have them do it. It has been 7 days of them with my car and have not gotten a single call back since the day I dropped it. Debating with myself if I should call them and see what's up. I say this because lemon law for used cars in NYS either 3 occasions in which the car was taken in for the same problem OR 15 days in which the dealer is in possession of your car due to a problem. So in a awkward possession.
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03-21-2017, 04:49 AM | #22 | |
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