[A4] Suction/Purge Valve and oil smells/leaks?
dbpulvino at hotmail.com
Wed Jul 18 17:11:11 EDT 2007
Reading through stuff at Audiworld, it appears it's a pretty common problem.
Mechanism would be PCV system getting blocked creating excessive pressure
in the engine (crankcase/head/etc). The seals seems to be the weak link
where this pressure is vented from...leading to pressure venting co-mingled
While the seals can become more permanently damaged, many seem to have found
freeing up the vent system stops the oil leaks. I'd give a link to what I
was looking at, but Audiworlds web addresses aren't set up for easy linking.
I did a search of the 30vV6 forum using "suction pump" as the search term.
Anyhow, getting ready to order the part from SJM.
>From: "Richard Hurt" <rnhurt at gmail.com>
>To: "Derek Pulvino" <dbpulvino at hotmail.com>, "A4 Mailing List"
><a4 at audifans.com>
>Subject: Re: [A4] Suction/Purge Valve and oil smells/leaks?
>Date: Wed, 18 Jul 2007 15:34:22 -0400
>WOW! I'm experiencing the same symptoms. Please let me know if you get in
>there and find out that a clogged valve was the cause all this time. I've
>been living with it because I can't find the leak and I can't afford to
>it down. :/
>My symptoms are:
> - Oily windshield on the inside
> - Burning smell after a hard drive (sometimes)
> - Copious amounts of oil dripping off the pan and parts thereabout.
>The bad part is that I can't seem to find out where the oil is coming from.
>The block looks pretty clean and dry (at least what I can see) and the
>camshaft seals were replaced with the timing belt. It didn't seem to make
>On 7/18/07, Derek Pulvino <dbpulvino at hotmail.com> wrote:
>>Getting ready to replace one of the broken hard plastic cranckcase vent
>>lines on the V6 which will also wind up opening up some space near the
>>of the engine. I've heard a rumor that the suction pump/purge valve, also
>>located in the back of the engine, can plug and lead to oil leaks via
>>positive pressure in the engine. Also read that this can lead to an oil
>>burning smell in the cabin, which I get from time to time along with some
>>oil leaks off the front of the engine.
>>As I'm going to be working in that area, I was wondering what peoples
>>experience with this part may be and if the above story is more than
>>Was thinking about ordering the suction pump at the same time as my PCV
>>A4 mailing list
>>A4 at audifans.com
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