Emissions Test Failed - Help?

[Richard J Lebens]

I think high hydrocarbons and CO indicate a rich mixture and/or
incomplete combustion.


--- Dave Hord <spokes at the-wire.com> wrote:
> Hey all,
>
> Patient: 1987 Audi 4000 quattro
> Problem: Failed Emissions Test.
>
> Test is done at 2500rpm (in neutral) and Idle RPM
>
> I don't have my first emissions test in front of me, but after
> failing the
> first test I looked in the archives and everything there seemed to
> point
> towards needing a new Catalytic Converter.  Easy enough, we make
> them.  I had a
> new O2 sensor in my desk, so I installed that as well.
>
> My new test this morning was a fail with pretty much the exact same
> numbers.
> Todays test:
>
> 2500RPM
> HCppm: Limit=300 - Reading=312
> CO%:  Limit=1.5 - Reading=8.76
>
> Idle
> HCppm: Limit=300 - Reading=580
> CO%:  Limit=1.5 - Reading=10.07
>
> Anyone have some bright ideas as to what I should be trying next, and
> where the
> problem might lie?
>
> Please CC me as well as the list, as I am switching to not-recieivng
> the list
> due to work being rather hectic this month.
>
> TIA,
>
> -Dave
>
> --
> 86 4ksq 266,600km new to me as of March 5th 2003... will it stick
> around??
> 89 90q  330,000km as of Feb 26th.
> Rally Conversion...perpetually in progress...
> Roll cage shots available at:
> http://home.the-wire.com/~spokes/rollcage/page1.htm
>
>
>


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