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Re: Crank Seal
This thread is really funny. Mine makes the whistle when it's cold. It
did it last winter. I replaced the oil seal when I did my belt this
fall. It still whistles. Happens around 2700-3000 RPMs when cold.
At 10:17 PM 12/7/99 , Fred Munro was inspired to say:
> The seal is designed to keep oil in more than it is designed to keep air
>out. The seal lips face inward and the seal is open to the inside, so oil
>pressure forces the lips against the crank. Air pressure from the outside
>pushes the seal lips away from the crank, so I would think it is possible to
>leak air and not oil. Besides, I had this whistle on my '91 200q and it went
>away when I replaced the oil seal as part of the t-belt job. It didn't leak
>any oil, but had an ear-piercing whistle when first started in winter.
>'94 S4 93k km
>----- Original Message -----
>From: "Iain Atkinson (ETL)" <firstname.lastname@example.org>
>To: "'Alexander van Gerbig'" <Audi_80@email.msn.com>
>Sent: Tuesday, December 07, 1999 2:32 AM
>Subject: RE: Crank Seal
> > Alexander
> > I would like to know how the seal whistles if it doesn't leak oil, one
>would assume that if air can pass then so can oil. Does it leak oil?????
> > Iain
> > -----Original Message-----
> > From: Alexander van Gerbig [mailto:Audi_80@email.msn.com]
> > Sent: 06 December 1999 18:37
> > To: email@example.com
> > Subject: Crank Seal
> > It seems as if my front crank seal is bad. The loud whistling noise
> > must be the crank seal since after adjusting the alternator/water pump
> > the noise persisted. I pulled the dipstick when the whistling was
> > and then allowed the engine to sit for a sec, then I revved and the noise
> > was gone. I assume that is a good indication that the seal is bad. How
> > pertinent a job is this? I also have a popping noise which sounds like
> > moving around down there. Is this an ASAP job?
> > Thanks!
> > Alexander van Gerbig -- '88 Audi 80
> > The Audi 80 Pages-----------------------
> > http://surf.to/the80pages.com
> > Katonah, NY 10536