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Last Post:
Dec 29, 2009 8:16 AM
Last Post By: budpalumbo
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Posts:
22
Registered:
11/09/05
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Oil leak on drivers' side & oil in the bi-pipes leading to intercoolers
Posted:
Dec 25, 2009 1:56 PM
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Hello I am currently replacing the timing belt on my '01 Allroad (tip, 2.7T, ~100k miles). It;s the same setup as my '01 S4 this is why I am reaching out to you S4 guys out there...
I noticed two things I have not seen on my previous Audis and current '01 S4:
1. oil leak engine left side: not exactly sure where it is coming from but it seems to drip through the engine mount, down on the sway bar and then on the floor; trying to localize the leak is hard because of visibility. It does not fell/look/smell like engine oil (may be tranny?) I am hoping by opening the front while doing the timing belt I could be more useful. I read other threads mentioning issues with valve cover leaks. Could that be the issue? If so, can one replace a gasket without replacing the engine? If it's a head gasket, same question as above.
2. While removing the bi-pipe and throttle boot (I am replacing them while I am in there) I noticed there was some oil in there and my heart started to panic a little. I don't a full understanding of turbo mechanics and I wonder if it is normal to have oil in some piping that seem to be (at least I thought) for air intake / cooling only. If this is not related to turbos, could that be related to my issue/leak in para 1 above?
Thanks a million in advance for all's your help.
Ginga52
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Posts:
1,409
Registered:
12/09/03
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Re: Oil leak on drivers' side & oil in the bi-pipes leading to intercoolers
Posted:
Dec 26, 2009 1:46 AM
in response to: Ginga
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Is the oil leak a purple stain? If it is, it's probably a bad engine mount. They are silicon filled, and when they rupture leak a purple fluid. It isn't always vavle cover gaskets, many times it's the cam chain tentioner gaskets (and half moon seals under them) The book repair is pulling the cams. Those and head gaskets can be repaired without pulling the engine. Could be a power steering leak too. Some oil in the turbo pipes can be expected, but you don't want to see it pouring out when the hose comes off-the car would probably be smoking at that point. Just keep in mind the oil is going to run down and back when you go digging for the source.
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Posts:
22
Registered:
11/09/05
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Re: Oil leak on drivers' side & oil in the bi-pipes leading to intercoolers
Posted:
Dec 26, 2009 7:45 AM
in response to: budpalumbo
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it did seem to have a purple hue to it which prompted me to ask if this could be from a trans line going by or else. This could be the issue that the mount is bad. When i first hoisted the car that's when I noticed the oil on the floor that had just seemed to leak out. No puddle on the driveway. The leak has stop now, about a 2 or 3 fl oz i think. I'll check again if there is anyleak coming above or near the mount.
If the mount is the culprit what then? I will have to lift the engine? (and probably do the other side at the same time?)
Is it common to have bad mounts?
aside from vibration during the driving (i suspect) what are the consequences of one or 2 bad mounts (on safety and causing other damage)?
Thanks!
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Posts:
22
Registered:
11/09/05
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Re: Oil leak on drivers' side & oil in the bi-pipes leading to intercoolers
Posted:
Dec 28, 2009 4:01 PM
in response to: Ginga
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I have a feeling it may be a torn engine mount because (now I realize) I hoisted the car from the transmission belly rather than the crossmember and my assumption is that the weight of the car may have been all on those engine mounts and one of them may have torn and that's why I saw oil (pinkish) dripping on the garage floor.
Questions:
1. Is it possible it's a torn mount which needs to now be replaced?
2. if so, how can this replacement be done "simply" without having to remove the entire engine?
3. what are the impacts of a bad mount on driving safety, component wear etc... would anyone highly suggest i get it replaced if the procedure is too complicated and time consuming?
I currently am done with the timing belt change and the spark plugs. While I have everything apart, this could be the opportunity to replace the mount (if it needs to be replaced) -- and possibly the other side, if this is recommended.
Thanks for the help all!
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Posts:
1,409
Registered:
12/09/03
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Re: Oil leak on drivers' side & oil in the bi-pipes leading to intercoolers
Posted:
Dec 29, 2009 8:16 AM
in response to: Ginga
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To change the mounts you just take the nuts loose from the subframe and engine bracket on each side of the mount and place a jack under the oil pan. Just jack it up enough to change the mount. Have a block of wood between the jack and oil pan to protect the pan and more evenly distribute the load.
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