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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 06-26-2014, 08:56 PM   #1
Dilon
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Oil leak front passenger under vanos

So I just did a valve adjustment couple days ago fitted new VCG, there's a nasty leak now and it's all over passenger side even In wheel well, see it mostly on the alternator under solenoid, Click image for larger version

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Any ideas guys??


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Old 06-26-2014, 09:35 PM   #2
Teslazerok
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Alternator is on the driver's side...

Did you mess up putting the return line or the vanos oil line back on?
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Old 06-26-2014, 09:36 PM   #3
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Double post.
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Originally Posted by svtmike
Your TL is an eminently replaceable mass production inaninimate object that doesn't give a sh*t about you.

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Old 06-26-2014, 09:36 PM   #4
Dilon
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Nah bro that line is pretty clean, well sorry it looks like the alternator on passenger side next to coolant


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Old 06-26-2014, 10:24 PM   #5
Dilon
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I never removed vanos line to do adjustment as far as I remember


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Old 06-27-2014, 12:51 AM   #6
IrishTiger
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Eh, I have an oil leak right now too - it's some chain or something. The dealer is going to fix it and then put some kind of fluorescent dye in the oil to verify the problem is fixed.

Is that fluorescent stuff okay in the oil or does one need to change early?

Good luck with your leak. It's a pain in the neck!
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Old 06-27-2014, 12:52 AM   #7
Dilon
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Chain tensioner


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Old 06-27-2014, 09:33 AM   #8
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Chain tensioner is an easy thing to check. Reach in there and if you can unscrew it with your hands, it's the problem.

Getting it back on is another matter. I borrowed a socket from Autozone. It's a PITA to get the tensioner tight but doable.
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Old 06-27-2014, 09:38 AM   #9
Dilon
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You sure that's the leak?


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Old 06-27-2014, 09:51 AM   #10
choxor
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There's no way any of us can be "sure".

http://www.m3forum.net/m3forum/showthread.php?t=433414

Look for yourself. All we can do is give suggestions. Other common places are the VANOS oil lines, where the vanos solenoid valve body mounts, and where the VANOS itself mounts to the head. However, it's most likely the tensioner given its location.
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Old 06-27-2014, 10:13 AM   #11
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http://forum.e46fanatics.com/showthr...583&highlight=
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Old 06-27-2014, 10:15 AM   #12
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Old 06-27-2014, 10:53 AM   #13
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It's the tensioner I think, pretty nasty for that


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Old 06-30-2014, 03:49 PM   #14
Dilon
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It's not tensioner or the washer, it's coming from somewhere else and it's splattering all over Ac condenser


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Old 06-30-2014, 06:40 PM   #15
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I'm not entirely sure but when you rev engine to 5k constant it will drop directly from the tensioner (32mm) bolt but I'm not sure if it's coming from it directly, it's pretty clean looking I changed the washer today and leak is still there


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Old 07-01-2014, 10:06 AM   #16
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Quote:
Originally Posted by Dilon View Post
I'm not entirely sure but when you rev engine to 5k constant it will drop directly from the tensioner (32mm) bolt but I'm not sure if it's coming from it directly, it's pretty clean looking I changed the washer today and leak is still there


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Did you get the tensioner on tight? It's a PITA to get it really snug.
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Old 07-01-2014, 11:27 AM   #17
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Yeah got a 32 and really tighten it, now this morning woke up and there my car is with all the oil on the floor. It drained overnight, all of it.

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Old 07-01-2014, 11:27 AM   #18
Dilon
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Maybe vanos pressure line at this point ?


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Old 07-01-2014, 11:59 AM   #19
Dilon
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Okay so it was indeed hand loose again (chain tensioner) we tightened it pretty tight before. How is it possible that all the oil can leak out at just sitting? Could it be a combination of the 2?


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Old 07-01-2014, 04:18 PM   #20
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I just picked mine up from the dealer where they fixed the chain tensioner. They charged me $397 to fix that. I'd rather pay them to do that than have a situation like yours where I have no oil except for on the ground.

I also bought a spare CPV in case that starts to leak.

While the M was in the shop I pressure washed the area I park it in to remove the oil stains, that way if it starts leaking again I'll know about it.

I wish you luck my friend, but I don't know enough about these cars yet to give you advice.
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