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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 11-03-2013, 11:21 PM   #1
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Join Date: Oct 2012
Location: Cincinnati
Posts: 5
My Ride: 325xi
It was a bad weekend to be me....

Valve cover has been leaky for some time, and Saturday I decided to go ahead and change out the gasket. I followed the Beisan guide to the letter, except once I got to the vent hose removal, I noticed mine did not look like the one in the picture. It has the same clip, but there was a piece of what looked to be radiator hose over the "nipple" coming back up under the clip. *Shrug* so I slide the hose back away from the clip to take it off and to my horror, the reason that piece of hose was there, was to cover the cracked plastic... pretty sure this answers my rough idle... but maybe not, I'm not exactly clear on what this vent is for.

Anyway, moving on, even though I know I'm not putting this cover back on my car and I wont be able to get another one until at earliest Monday, I go ahead and remove it to see what other surprises were waiting for me.

The gasket has clearly been replaced fairly recently, my car has 93k miles on it and all the rubber was still fairly flexible, I was tempted to put it back on with the same bandaid that was there before until I saw that one of the the tabs on the front that retains the horseshoe part of the gasket was also broken off...

WTF, who does this? Also, how in the hell has this held for so long? I've owned the car for 2 years. Fortunately, I have been able to locate a salvage part for around $100 but its going to take time to ship. If anyone knows where I can find an intact valve cover in the Cincinnati area for less than the cost of a new part, please let me know.

For now, I've put the cover back on and the coils back in, but left everything disconnected. I'm assuming the car should be fine in that state until I get a new cover. While I'm in here, what else should I be checking for leaking oil, there seems like there is a lot of it on the slash guard under the car.

Last edited by Kevinnku20; 11-03-2013 at 11:25 PM. Reason: Dropped down the image size to be reasonable.
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Old 11-04-2013, 06:14 AM   #2
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Join Date: Apr 2008
Location: Boston
Posts: 4,971
My Ride: 2003 325xi
That hose runs to the CCV. You may want to replace the CCV and oil filter housing gasket while you wait for the new valve cover to be shipped.
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Old 11-15-2013, 08:25 PM   #3
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Join Date: Aug 2013
Location: Boulder, Colorado
Posts: 67
My Ride: 2002 325xiT
CCV replacement is NOT fun...I just did it. It did make my car run incredibly better though.
Steve in the foothills of the Rockies
2002 325xiT (have 2)
1967 Jaguar 420G
1945 Dodge WC52 Weapons Carrier (snowplow now)
2003 Harley Dyna Super Glide
1989 Honda XR600r
1968 BSA Shooting Star
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Old 11-17-2013, 02:21 PM   #4
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Join Date: Aug 2011
Location: Reading, Pennsylvania
Posts: 815
My Ride: 325xi, M3, 325e, 328
Year: 2004
Model: M3
Transmission: 6 speed manual
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I agree, the CCV replacement is a royal PIA job, and if you do it, replace ALL 4 Hoses at the same time as you will most likely break another 1 or 2 removing them! And since the entire engine is a sealed vacuum so to speak, even a broken CCV or CCV hose will cause issues because of the vacuum leak.
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