cat price/quality + NOx question

[ggehrke at gmail.com (GGehrke)]

IIRC, an engine that runs too hot or too lean (b/c lean mix causes
high temps) will increase NOx levels.
Therefore, leaky fuel injector seals will lead to excess air which can
lead to increased NOx levels, so yes, that could be part of your
problem.
Other things to check are cooling system in general and spark timing.

-Grant-


On 5/17/05, wolfsbrg8v@bellsouth.net <wolfsbrg8v@bellsouth.net> wrote:
> 
> Egad !?!  Failed the @#$% emissions test this time on the NOx levels, which jumped nearly 90% from last year.  HC and CO were up 50% but still well below passing, so I'm hoping that replacing the cat, which has been rattling like nickels in a coffee can for the last few months, will do the trick.
> 
>  From price comparisons it seems I can pay anywhere from $72 at the local Autozone, to ~ $150 for an Emico or Bosal.  I'm on a tight budget, but also I don't want to buy a piece o' crap ... so, is it worth spending the extra $?  Or is the Autozone/FLAP version just as good?  Any advice muchly appreciated.
> 
> Also -- would leaky/hardened injector seals contribute to higher NOx emissions?
> 
> Leo
> 
> 84 Wolfsburg Dee-Luxe
> 
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