88 Audi 5000 *SUCCESS* at last !

Huw Powell human747 at attbi.com
Wed Aug 14 18:13:04 EDT 2002

> >Don't see any mention of timing in your list.  Has Jim checked the
> >timing belt and distributor position with a timing light?  Normal
> >timing is 15 deg BTDC.

I thought it was 12, but 12-15, pretty much the same, anyway.

> >Huw Powell says timing can be advanced to 20
> >deg BTDC and I've run that with no problems.  The ignition is
> >totally electronic, distributor hall sensor actually triggers 60
> >degrees BTDC and ignition module retards the appropriate amount
> >based on knock detected.
> Thanks everyone for all of the many suggestions.   We sure are
> learning a lot here!
> My good pal and hubby finally dug my timing light out and loosen the
> distributor.  Sure enough when he moved it up it ran much better.
> It didn't sound just right at 20, so he moved it to about 22 on my
> recommendation of how it sounded.

If it was "easy" for him to do this, then the timing has probably been
messed with before (unless someone had to swap the dist for some
reason), since form the factory there is a plate riveted over the nut
you loosen to adjust the timing.

I would recommend trying to get a nice, stock baseline for everything.
Set the timing to 12 degrees.  Check OXS output for proper fluctuation
(warm engine).  Measure the control pressure actuator current for
similar fluctuation around 0 mA.  I think someone may have tinkered with
your settings, perhaps to accomodate air leaks or something, and it
needs to be set back where it is supposed to be.

There might be some helpful ideas at:


Huw Powell



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