[s-cars] Engine Noise

David Ullrich david.ullrich at gmail.com
Mon Aug 28 14:43:39 EDT 2006

On 8/28/06, Kent McLean <kentmclean at mindspring.com> wrote:
> Max Hoepli wrote:
> > Some people have remarked if I drive a diesel, I have a
> > 1986 Audi 5000 Turbo Quattro. What would cause the noise?
> A couple of things come to mind.
> If the noise is a fast tick-tick-tick, my guess would be noisy
> lifters. If caused by sludge, you may be able to clean things
> with an engine-flush-in-a-can, then change the oil to a good
> synthetic. If that doesn't help, replacing the lifters will
> cure it (if the problem is the lifters). That's relatively
> common and easy to repair.
> If the noise is a louder clack-clack-clack or thunk-thunk,
> it may be a rod or journal bearing. That won't be fixed
> with an engine flush -- it requires an engine tear down.
> If you have a mechanics stethoscope (or length of small
> tubing), see if the noise if from the top of the engine
> (lifters), or the bottom (bearings).
> --
> Kent McLean
> '94 100 S Avant, "Moody"
> '89 200 TQ, "Bad Puppy" up in smoke
> _______________________________________________
> quattro mailing list
> quattro at audifans.com
> http://www.audifans.com/mailman/listinfo/quattro
> ---
> Watch this space for ads :)

Excellent point. But, I have to ask, have you ever heared of rod or journal
bearing failures on a 10v I5 that is stock and not very severely abused
(like run with no oil or overrevved)? From my experience, even poorly
maintained and run hard I5s just laugh at you and beg for more.

1987 CGT 2.3

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