On 9/27/05, CHRIS KOTTING <ckotting@wideopenwest.com> wrote:
>
> Some things to think about:
> Nitrogen oxidizes at very high temperatures, so there may be "hot spots" in
> the combustion chamber (carbon build-up?), or the old cat-con was
> overheating. (The EGR valve is a good guess, since the purpose of EGR is to
> control temperatures in the combustion chamber.)
>
> Try a different fuel. Some fuels contain more nitrogen. There's already
> plenty in the air, but more nitrogen in the fuel will mean more nitrogen in
> the combustion chamber, and more NOx in the exhaust.
>
> As for why you can't see the EGR valve, it may be incorporated into the
> exhaust and intake manifolds in such a away as one or both has to be removed
> to see it.
I'm pretty sure the reason he can't see an EGR is that one doesn't exist.
--
David Scheidt
dmscheidt@gmail.com
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