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Valve cover gasket still leaking after replacement
I did the oil separator (CCV) about a year ago and then did the valve cover gasket a few weeks ago. Still, the issue persists. I did some searching on this forum and found one person who had a warped valve cover. Is this a common problem? Is there anything else I should try? I don't have sludging issues and have verified that. I would like to get to the bottom of this. Any help is greatly appreciated. Thanks!
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2003 3.0 5MT Topasblau Purchased in 2016 and surprisingly still running |
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I had the same problem. What helped with mine is I rechecked the torque on all the bolts/nuts and found that it needed a slight more snugging after some time and heat. The gasket will bed in sometimes not perfect notably on the exhaust manifold side which gets extra heat etc. My Dad who is a former race engine builder suggested I use a good quality rtv silicone and apply a thin bead to the inside of the gasket seat on the valve cover and then place gasket. I will try that on my wife's x3 I'm doing this week. Just a thought.
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2005 X5 3.0, 6MT, Alpine White on Truffle Brown, Sport, Preim, and Cold Weather, Alpina Stainless Headers, AFe Intake, UUC SSK, OEM 87's, 3.64 Differential Swap,Performance Modified Euro 2 Tune, UUC LTW Flywheel and HD clutch, Bilstein B12 Suspension kit Future mods ZHP/Schrick Cam Shaft upgrade, Operation code name:Doppelschrauben-Kompressor Wife's Ride: 2011 e70 X5 351 M///Sport. Also in the fold: 2004 X3 3.0, 6MT, Black Sapphire on Terracotta, port, Premium, Cold Weather. |
#3
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#4
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Try to get the neoprene (expensive) valve cover gasket AND matching grommets. There is no torqueing or re-tightening because the grommet sleeves get bottomed out and the grommets determine the clamping force on the gasket. Be very carefull to tighten evenly though.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#5
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False alarm fellas... I had some extra time and convinced myself to just pull it off. I found the back corner over the exhaust had fallen out and folded over when I put it back on and I just couldn't see it without removing. Sorry
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2003 3.0 5MT Topasblau Purchased in 2016 and surprisingly still running |
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#7
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Don't be surprised if you have to replace your valve cover due to cracking after 300,000 miles though. It can cure a rough idle like mine was suffering at 317,000 miles.
2002 X5 3.0 339,700 miles 2014 428i 36, miles 2004 325i sold at 123,600 miles 2001 325i sold at 66,000 miles 1970 Firebird Under restoration |
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you are at 317k in mileage?
wow. |
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No, that's when the valve cover was replaced. I'm currently at 343,966 miles |
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