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BMW 3-Series (E90 E92) Forum
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DIY - Your Oil filter housing gasket is leaking.
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01-14-2011, 04:02 PM | #1 |
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DIY - Your Oil filter housing gasket is leaking.
Is that oil coming from my head gasket?
No, it's most likely not your head gasket leaking, it may just be your oil filter housing gasket. (an oil leak seen under your intake manifold following the head gasket going all the way around the front part of your block but stopping at the AC condenser, can also be identified as a thick oily dirt build up in those areas.) Wouldn't it be nice to find out it was just a $20 gasket rather than a $2000 engine rebuild? Well here's how you do it, and when you see the condition of your old gasket you'll think: "WTF... Why didn't BMW mention this in their lifetime maintenance program?" Tools: Small mirror 8mm box end wrench (ratcheting or regular) large box end wrench (for leverage) metal pick (like a dental pick) brake cleaner shop towels zip tie New Gasket (part 11427537293) step 1: identify if you have this leak (oil/dirt under the metal neck of the coolant pass through) step 2: Unplug oil pressure switch (brown w/black plug on housing) Take out intake air box and drain coolant. (look for coolant diy) *you may notice black particles in your coolant. this is from the deteriorated gasket. step 3: Identify and remove the three bolts holding on the filter housing. (look at the pictures, use a large box end wrench to give you leverage as seen in pictures 6 and 7. zip tie the freed housing to the intake manifold) step 4: use a metal pick to take out the old gasket. (Mine was totally flattened out stuck and deteriorating into the coolant system) step 5: block all passages with shop towels, clean all mounting surfaces with brake cleaner. step 6: remove all shop towels and position new gasket. step 7: re-install housing and torque all 3 bolts in a criss cross pattern till they stop (use no leverage). STEP 8: reinstall intake air box, refill and bleed coolant.
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For Sale: Jet Black pre-LCI front bumper/hood/trunk lid, oe tail lights, 2 oe 16 inch rims w/ good tires. PM w/ offers. Last edited by allmotorh22; 01-18-2011 at 06:00 PM.. |
01-15-2011, 11:18 AM | #2 | |
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01-17-2011, 09:05 PM | #3 | |
making his own parts.
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If you do a coolant change and see black chunks in the fluid, change this gasket. btw, this gasket will not last forever, its made of rubber. Mine @ 100k was totally flat and squared into the grooves when the new gasket was diamond shaped and almost an 1/8th of an inch thicker.
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For Sale: Jet Black pre-LCI front bumper/hood/trunk lid, oe tail lights, 2 oe 16 inch rims w/ good tires. PM w/ offers. |
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02-05-2011, 02:29 AM | #4 |
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mines went out at 60k cost me $430 to do it at a shop, not BMW dealer, if i found this thread i should would of took at shot at it BTW the gasket is around 30$ at the stealership
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02-12-2011, 11:46 AM | #7 | |
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One bolt of the oil filter housing is under the intake manifold, and it is not short. You have to move the intake manifold to get at it, well, at least on the N54. (The curvature of the manifold may be a little better on the N52/N51 engine.) This requires removal of the microfilter housing, air intake, left charge air duct, and unbolting the intake manifold, at the least. (I actually removed the throttle body, but I'm not sure if this is necessary because I didn't try it without removing it.) This is a decent amount of work. Don't feel so bad. (My family is wondering if the car will start after I'm done. I'm trying to retrofit a Dinan oil cooler into it and it requires changing the housing.) Last edited by jzchen; 02-12-2011 at 11:52 AM.. |
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02-22-2011, 08:52 AM | #8 |
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Got the same problem.
After I drained coolant I tried to disconnect coolant pipe from the housing. When doing that I lost some o-ring that snapped out of the pipe... the rubber gasket is still in there but I definitely saw something dropped but cannot find it... Does anybody have that pipe part # or something so I can call a dealer and figure out what was that? thanks |
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02-25-2011, 03:52 PM | #9 | |
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03-22-2011, 03:07 PM | #12 |
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You would think the gasket material chosen to fit this application would be compatible with the coolant used in the system. This car was designed around 2005 and I would hope this kind of testing is done. OEM coolant suppliers provide this to manufactures. Use this material for gaskets.... avoid any contact with x metals.....
Is it possible the factory fill coolant was replaced with an incorrect type to create this gasket issue? |
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03-25-2011, 08:34 PM | #13 |
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N54Bolt Torque specs
Very informative and easy to follow. Wanted to see if you guys knew the torque setting for the bolts that secure the oil thermostat housing to the oil filter housing? I am getting a leak in between there and have bought the seal it needs. Every morning when i start it up i get seapage and goes away after a while, but is always wet when i clean it off. I bought the seal that was $18 and the 2 o rings that secure the engine oil cooler lines to the oil thermostat housing (looks like they are a little wet too). Does anyone know the torque for the 3 bolts holding the oil thermostat housing to oil filter housing, the bolt holding the 2 oil cooler lines to the oil thermostat housing and if you guys recommend coating the seal with anything besides oil when installing? thanks and i hope someone can give me some direction. My vehicle is a late 07 335 and has an engine oil cooler.
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03-28-2011, 12:33 AM | #15 |
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Man I am glad i saw this-
I have this leak also. I was trying to find the cause of the build up of grime on the front of my block.. then i took a mirror and wouldn't you know it, all grimed up under the coolant hose just like you said. there was some fresh oil, but mostly thick grime. The nice thing is my car uses/loses very little oil, id say 1/4qt every 5k (knock on wood), so I now its not leaking a ton. Now I have to find a weekend to do this. Ordering the gasket now, is there anyone in SoCal that wants/can help : ) Mr.5? lol
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03-28-2011, 07:10 PM | #16 | |
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05-04-2011, 09:32 PM | #18 | |
making his own parts.
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here you go:
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For Sale: Jet Black pre-LCI front bumper/hood/trunk lid, oe tail lights, 2 oe 16 inch rims w/ good tires. PM w/ offers. |
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05-18-2011, 06:46 PM | #19 |
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Do I need to drain the oil also?
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E46 S54: Black on Black, 6MT, Agency exhaust, ESS chip, KW2 coilovers, H&R Spacers. E93 N54: Black on Black, 6MT, FULLY STOCK. Sports PKG. E90 N52: Black, AT, H&R Sport springs, Hyper Silver 19" VMR V715 staggered |
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08-25-2011, 12:07 PM | #22 |
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for those who don't know if you need this done or not, i posted pictures of my engine here:
http://www.e90post.com/forums/showthread.php?t=512950 if your engine looks like this, you need this done |
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