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BMW 3-Series (E90 E92) Forum
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Valve cover leak ... again!
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10-11-2024, 01:19 PM | #1 |
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Valve cover leak ... again!
Hi Guys,
I am at a loss with this car... I changed oil seal pan couple months back; which was the last (I thought) seal I have not touched on this car. All good, but now both oil filter housing leaks (bad) and valve cover (medium). THe thing is, I swapped out the valve cover with a new cover and seal about 4 years back.. Torqued to spec. OEM cover and new bolts.wtf. Question is, should I be fine to just buy a new seal now, and re-use the valve cover, or is it a must to change the valve cover once it has been torqued down? Might as well do both, as I have to open up and remove the intake... thank you
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2009 E92 M3 6sp manual - stock
2008 335xi sports package 6sp manual ; Helix stepped intercooler, M3 steering wheel, ZCP M3 shifter, Eibach sport springs, Bilstein B8 shocks; Rob Beck stage 2 turbochargers; MHD stage 2. |
10-11-2024, 02:02 PM | #2 |
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Did you verify torque on the valve cover bolts a few times?
Depending on how you torque them down, you may think its good but it's not. Other thing could be you're over pressurizing inside the cover due to paulty pvc valve. Did you change the check valve? |
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10-11-2024, 03:20 PM | #3 | |
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Quote:
I guess I could undo the bolts and re-do them at 10Nm , the specified torque, see if that helps.
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2009 E92 M3 6sp manual - stock
2008 335xi sports package 6sp manual ; Helix stepped intercooler, M3 steering wheel, ZCP M3 shifter, Eibach sport springs, Bilstein B8 shocks; Rob Beck stage 2 turbochargers; MHD stage 2. |
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10-12-2024, 06:28 AM | #4 | |
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Quote:
I believe the bolt torque is 8.5 Nm but not sure it would make that big of a difference where it would cause a leak. I also wouldn’t undo all the bolts reuse the same gasket I think you’ll run into more leaks. When you did the install did you lube the gasket with motor oil? This helps prevent the gasket from bunching up while it moves around on the head during install. Also what torquing pattern did you use? |
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10-14-2024, 05:35 PM | #5 | |
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Quote:
I did lube the gasket. But problem fixed itself meanwhile : I sold the car
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2009 E92 M3 6sp manual - stock
2008 335xi sports package 6sp manual ; Helix stepped intercooler, M3 steering wheel, ZCP M3 shifter, Eibach sport springs, Bilstein B8 shocks; Rob Beck stage 2 turbochargers; MHD stage 2. |
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