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      08-18-2012, 12:42 PM   #1
mousitch
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Constant pressure valve leaking

Very slow leak. looks like a bitch to replace. Anyone here made this repair?
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      08-18-2012, 02:08 PM   #2
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I had mine changed in June (under warranty) but I think it only called for an hour labor if I remember correctly.
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      08-18-2012, 07:41 PM   #3
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I've done it on the E46M. It's just getting to it that is a pain. I used a large flathead bit socket and an extension onto a ratchet. It came right off. I recommend just swapping out the o-ring.

http://i1212.photobucket.com/albums/...y/IMG_0277.jpg

http://m3forum.net/m3forum/showthread.php?t=369406

Everyone should do this when swapping out headers because access without the headers makes this a 5 min job max.

Last edited by Jumbosock; 08-18-2012 at 07:53 PM..
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      08-18-2012, 08:07 PM   #4
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Thanks

Ordered a new o-ring. Doesn't look to bad. I have had the reinforcement plate off before.
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      08-19-2012, 07:54 AM   #5
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Thanks for the info.
I think mine is just starting to leak.
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      08-19-2012, 12:45 PM   #6
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Thanks!
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      08-19-2012, 01:57 PM   #7
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Good luck finding the 42653 Craftsman bit guys. Looks like there is one(I bought the other) set on Ebay. Sucks to have to buy the other 2 bits in the set but that's all I could find. Sears sold out online. Found one at a Sears about 30 miles away but the inventory was off when I arrived. Ugh. Ordered full set for $15 off Ebay. Ill send mine out as a loaner when I'm done, if you come up dry. Or just keep it till someone else needs it. Community bit.

Set
http://www.ebay.com/itm/SET-3-CRAFTS...item3cc9e0c0dd

http://secure.nhbragg.com/product/cr...socket-722137/
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      08-20-2012, 01:15 PM   #8
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There are a few others that will probably work.

http://www.ebay.com/itm/ws/eBayISAPI...ectorid=229466

http://www.ebay.com/itm/ws/eBayISAPI...ectorid=229466
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      08-25-2012, 01:39 PM   #9
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Easy fix. Old o-ring was super hard. 35 minute repair.
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      08-25-2012, 02:52 PM   #10
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Quote:
Originally Posted by mousitch View Post
Easy fix. Old o-ring was super hard. 35 minute repair.

more info pleased!!!! this seems that it will fail at some point!! can you please post your removal procedure, im glad its a 30 min fix!!!
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      08-25-2012, 03:17 PM   #11
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First off, DO IT AT YOUR OWN RISK. I AM NOT RESPONSIBLE FOR ANYTHING THAT MIGHT HAPPEN TO YOU OR YOUR VEHICLE. Now that's out if the way, let's proceed


Tools used: 1/2 breaker bar, long 3/8 ratchet, 8mm nutdriver, stubby screwdriver and a 42653 Craftsman screwdriver/socket screw tip. 16mm 1/2 socket and a 3/8 10mm socket. Rags, coffee can. Jack and jack stands

Raise front of car and place on strands. The higher the better. A lift would be nice.

Removed three 8mm nuts from the front plastic tray where it meets the reinforcement plate.

Removed small shield over tranny(4ea-10mm bolts). Then removed the eight bolts holding the reinforcement plate shield broke loose bolts 1/2 breaker bar and a 16mm socket.

Then I stuck my worklight up between the headers. If you look straight up in back side of engine and you will see a slotted nut. I used the screwdriver bit to break it loose and the stubby to remove. This is tight but it can be done. And I have some big hands.

Took off old o-ring , put on new oring and reverse the procedure. These are supposed to be one time use bolts but i reused the old ones.Torque reinforcement bolts 59Nm
Turn an additional 90º (with a tolerance of +/- 30º)
---->This does NOT mean an additional turn of 30 after the 90, it is just a tolerance range to prevent over tightening.

You will loose a small amount of oil so have a coffee can ready. Plus check your oil level after repair.

Google search has quite a few DIYs that are similar. I believe the shield on the e46 is slightly different


This video is pretty good at describing location.





I bought the new o-ring from here. Bought two just in case. These are improved o-rings.

http://m3forum.net/m3forum/showthread.php?t=369406
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      08-25-2012, 06:47 PM   #12
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Thanks! We'll do this when Ian and I Install our new Headers I believe he already ordered the O Rings.
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      08-25-2012, 08:09 PM   #13
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Yep
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      08-26-2012, 02:32 AM   #14
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Quote:
Originally Posted by Caddyshk View Post
Thanks! We'll do this when Ian and I Install our new Headers I believe he already ordered the O Rings.
absolutly.... you'd be mad not to!!!
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      08-26-2012, 12:52 PM   #15
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What's the sympton of the CPV leak? Did you notice anything while driving? Or just noticed oil on your garage floor?
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      08-26-2012, 01:23 PM   #16
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Quote:
Originally Posted by GP20 View Post
What's the sympton of the CPV leak? Did you notice anything while driving? Or just noticed oil on your garage floor?
Just a drip every so often. Honestly it was a slow leak. I may have actually only saw three drips total in 3 months. But it was still leaking and I couldn't have that. If no leak its a good PM practice to go on and switch to the better o-ring IMHO. Of course this depends how comfortable you are with fixing something not yet broken.
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      02-28-2013, 07:49 PM   #17
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Mousitch,

any way you can PM me the gentleman on m3forums and get his paypal/email for me? I am unable to PM him or post anything in "for sale" thread since I have a brand new account there.

Thanks!
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      02-28-2013, 11:04 PM   #18
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At what age or mileage are the stock O-rings starting to leak? I've got to remove the plate and do my motor mount bolts so I may as well do this too!
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      03-01-2013, 12:20 AM   #19
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Quote:
Originally Posted by SCHMOUPE View Post
Mousitch,

any way you can PM me the gentleman on m3forums and get his paypal/email for me? I am unable to PM him or post anything in "for sale" thread since I have a brand new account there.

Thanks!
Pm'd
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      03-01-2013, 12:20 AM   #20
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Quote:
Originally Posted by elerner61 View Post
At what age or mileage are the stock O-rings starting to leak? I've got to remove the plate and do my motor mount bolts so I may as well do this too!
25000 miles I saw the drip. Very minor leak
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      03-01-2013, 12:26 AM   #21
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Quote:
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Pm'd
Thank you sir!
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      03-01-2013, 09:34 PM   #22
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Can you PM me the info too. I want to pick up some viton rings
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