Re: Sticking, clicking valve lifters

[Alexei M Voloshin <Alexei.M.Voloshin-1@tc.umn.edu>]

I don't know if this has been mentioned, but I was talking to the service 
manager once at the local Audi dealer. He is very informed person and 
knows pretty much everything about any car. 
I asked about the noisy lifters and he said that what usually helps is 
putting a half-quart of ATF in your oil during the next oil change. I 
know this sounds crazy, but I know this has been done in Legends that 
also use hydrolic valve lifters and it does help. Until this conversation 
I didn't know that it also works on Audies, but it does make sense.
Has anybody ever tried this on an Audi?? 

Alex

 

On Wed, 12 Mar 1997, Phil Payne wrote:

> In message <Pine.A32.3.91.970312094324.89424E-100000@gnu.uvm.edu> "Louis A. Mulieri" writes:
> 
> > When I bought my 5000cstq my prebuy check mechanic told me that clicking 
> > valve lifters were 'normal' for audis.  Not to worry.  So I haven't but 
> > the recent thread has got me started.  Two questions:(1) how loud  before I 
> > start to worry; and (2) do I have solid or hydraulic lifters?
> 
> Assuming you have hydraulic lifters:
> 
> a) Check oil level.
>  
> b) Start engine and wait until radiator fan runs.
>  
> c) Raise rpm to 2500 for two minutes.
>  
> If you can still hear the lifters, one or more needs to be replaced.
> 
> > 	Another recent post on getting the underside washed, someone, I 
> > think Phil, said that there is a negative pressure in crankcase and that 
> > this can pull in water instead of air.  Is this true of my model as well?
> 
> True of all injection models.  The ban on washing the engine is only when 
> the motor is running.  With the motor off, there should be no problem.
> 
> --
>  Phil Payne
>  phil@sievers.com
>  Committee Member, UK Audi [ur-]quattro Owners Club
>