<clive.twist@orange.net> wrote
>
> I appreciate that the water pump is driven from the same belt, but is
> it common for a waterpump failure to wreck an A4 engine?

There were only a few years where the engine design was such that a failed
WP would cause a TB failure, so in the grand scheme of things, it's probably
not very common. But it's not impossible either.

Usually, the most common reason for TB failure is a prematurely (if you look
at Audi's replacement recommendations) broken TB tensioner. But whatever
the cause (broken tensioner or seized WP), the result is generally the same:
bent valves on the engine.

Those who are "in the know" replace the TB, tensioner, rollers, and WP every
60K miles, just to be safe.

Cheers,
Pete

 

In message <ec4hnd$ego$1@inews.gazeta.pl>
"Pete" <escape2music@hotmail.com> wrote:
> Those who are "in the know" replace the TB, tensioner, rollers, and WP every
> 60K miles, just to be safe.

Audi UK now schedule timing belt change on all cars at four years/60k
miles, whichever comes sooner (except the RS6, which is three years).
This applies retrospectively, to all models with a timing belt.

--
Peter Bell - peter@bellfamily.org.uk

 

In message <ec4hnd$ego$1@inews.gazeta.pl>
"Pete" <escape2music@hotmail.com> wrote:
> Those who are "in the know" replace the TB, tensioner, rollers, and WP every
> 60K miles, just to be safe.

Audi UK now schedule timing belt change on all cars at four years/60k
miles, whichever comes sooner (except the RS6, which is three years).
This applies retrospectively, to all models with a timing belt.

--
Peter Bell - peter@bellfamily.org.uk

 

In message <ec4hnd$ego$1@inews.gazeta.pl>
"Pete" <escape2music@hotmail.com> wrote:
> Those who are "in the know" replace the TB, tensioner, rollers, and WP every
> 60K miles, just to be safe.

Audi UK now schedule timing belt change on all cars at four years/60k
miles, whichever comes sooner (except the RS6, which is three years).
This applies retrospectively, to all models with a timing belt.

--
Peter Bell - peter@bellfamily.org.uk

 

In message <ec4hnd$ego$1@inews.gazeta.pl>
"Pete" <escape2music@hotmail.com> wrote:
> Those who are "in the know" replace the TB, tensioner, rollers, and WP every
> 60K miles, just to be safe.

Audi UK now schedule timing belt change on all cars at four years/60k
miles, whichever comes sooner (except the RS6, which is three years).
This applies retrospectively, to all models with a timing belt.

--
Peter Bell - peter@bellfamily.org.uk