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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 05-11-2011, 12:35 AM   #1
Shred Sled
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Join Date: Sep 2004
Location: New Jersey
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My Ride: 2004 325xit
Valve seals and head gasket replacement

Took my car ('04 325xit w/112K mi) to the dealer Monday for excessive oil consumption. Have added 3.25 qts in the last 4.5K miles. Dealer could not visibly see any oil leaks, so I ok'd them to do a compression test. Their opinion is that I need new valve seals as oil is leking into the combustion chamber. They suggested that while everything is apart, I might as well replace the head gasket also. Now here's the bummer...their estimate is $4,500.

Notes:
1. Replaced valve cover gasket some time ago and still looks good
2. Replaced oil separator and tubing recently and looks good.

Suggestions, comments?

Last edited by Shred Sled; 05-11-2011 at 11:32 PM.
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Old 05-11-2011, 02:21 AM   #2
tnhl1989
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Change the type of oil you are using. Try that. Switch either to the m1 0w30 or the Castrol 0W-30. Some people say it makes a big difference. I attached a link I found regarding this. I would suggest this before getting a $4,500 job done personally. Spend the $65-70 dollars on the oil rather than $4500 on the dealer.

http://forum.e46fanatics.com/showthr...hlight=castrol

Also if that's what they say is leaking I would personally also do the job myself as far as VCG, and OSG. I actually have to do those to my cars and at the same time I'm going to replace the seals of the vanos as well. I think majority of my leak is actually from the oil pan but I'm not sure how to actually change that gasket on the XI models. Still researching but will get back to that one day.
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Old 05-11-2011, 08:21 AM   #3
Kubica
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He could try 15w-50 too, but I would definitely take it to an indy mechanic and not the dealer.

A used motor is only around $2-3k.
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Old 05-11-2011, 11:39 PM   #4
Shred Sled
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Picked up my car today and learned that they also performed a leak down test. The test numbers were absolutely horrible...

Compression Test:
1. 182PSI 2. 180PSI 3. 185PSI 4. 180PSI 5. 180PSI 6. 180PSI

Leak Down Test:
1. 92% 2. 93% 3. 93% 4. 94% 5. 92% 6. 96%

Are these leak down numbers even possible for all six???


Quote:
Originally Posted by Shred Sled View Post
Took my car ('04 325xit w/112K mi) to the dealer Monday for excessive oil consumption. Have added 3.25 qts in the last 4.5K miles. Dealer could not visibly see any oil leaks, so I ok'd them to do a compression test. Their opinion is that I need new valve seals as oil is leking into the combustion chamber. They suggested that while everything is apart, I might as well replace the head gasket also. Now here's the bummer...their estimate is $4,500.

Notes:
1. Replaced valve cover gasket some time ago and still looks good
2. Replaced oil separator and tubing recently and looks good.

Suggestions, comments?

Last edited by Shred Sled; 05-12-2011 at 12:26 AM.
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Old 05-12-2011, 07:58 AM   #5
markusvt
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Looks like they reversed their numbers, and meant 8% and wrote down 92%. Check your CCV.
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Old 05-13-2011, 05:08 PM   #6
Shred Sled
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markusvt,

Spoke with the service rep yesterday about the leakdown test and he confirmed reading the numbers in reverse as you thought,
thus the leakage would be 1. 8% 2. 7% 3. 7% 4. 6% 5. 8% 6. 4%.

I would say not bad leakage (and compression) numbers for having 112K mi on the car. I'll check into the CCV as you mentioned.

Last edited by Shred Sled; 05-13-2011 at 05:12 PM.
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Old 05-13-2011, 05:24 PM   #7
Mouf
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Oil consumtion is a know issue with these engines. To be honest I would not waste the money replacing the valve seals. Mine uses 1 qt ever 2000 miles. If I remember right BMWs allowable limit is something like a quart every 500 miles or something crazy like that. I will see if I can dig the bulletin up.......

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Old 05-14-2011, 12:06 AM   #8
Shred Sled
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After some research, it seems that the CCV and oil separator are basically one in the same. Did not know that. Looking back at my service papers from January, I had my ccv replaced with a newer, cold weather version...

11-61-7-534-237 Repair Kit
11-43-7-565-438 Guide Tube
11-15-7-532-629 Vent Hose
11-61-7-504-536 Return Pipe

The rubber washer at the bottom of the guide tube was not listed as being replaced, so I wonder if anything could be leaking there?
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Old 06-21-2011, 03:16 PM   #9
association16
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I don't know a lot about cars, however I should still know what a CCV is since I read it in a previous thread, but what is it?
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Old 06-21-2011, 03:42 PM   #10
SamDoe1
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Quote:
Originally Posted by association16 View Post
I don't know a lot about cars, however I should still know what a CCV is since I read it in a previous thread, but what is it?
Crank Case Vent Valve or an oil seperator.
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Old 06-21-2011, 03:47 PM   #11
association16
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Thanks
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