[DML] Re: Failed CA Smog HELP

["dmcchaser" <dmcchaser@xxxxxxxx>]

Hmmm...  It looks like you might be running a little too lean.  The
CO2 reading are down a little from what I'd like to see, the O2 is
also a little low, HC is quite low, (I'd like to see closer to
75-100ppm, though lower is less polluting).  CO I'd like to see closer
to 0.1-0.5 or so.
I'm not sure exactly what the limits are where you live, so these are
just ballpark figures based on WA emission standards.
All in all it looks like you have a good running engine that is just a
touch lean.  Richening slightly will lower the combustion temps and
lower the NOx levels.  Just don't raise it so much that you fail on CO :)
If it isn't possible to bring everything into specs, the Cat may be
starting to fail, but I don't see anything really wrong with it based
on the numbers.

Matt Smith


--- In dmcnews@xxxxxxxxxxxxxxx, "valleyrat12" <valleyrat12@xxxx> wrote:
>
> 15mph- C02 14.37 O2 .37 HC 16 CO .02 NO 1147
> 25mph- C02 14.45 O2 .37 HC 13 CO .02 N0 1283
> 
> Technically I only failed the 25mph of the NO but 15 mph was close.
> (1147 out of 1148)Every other number is way low.
> 
> Nathan
> 
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, "dmcchaser" <dmcchaser@xxxx> wrote:
> >
> > Could you post the rest of the numbers please?  It would be good to
> > see the whole picture to get a better idea of what's going on.
> > 
> > Matt Smith
> > 
> > 
> > 
> > --- In dmcnews@xxxxxxxxxxxxxxx, "valleyrat12" <valleyrat12@xxxx> 
> wrote:
> > >
> > > Here are the numbers:
> > > 
> > > 15mph  NO (PPM) 1147 (1148 max allowed) Squeaked by..
> > > 25mph  NO (PPM) 1283 (978 max allowed)  OUCH!!
> > > 
> > > All the other nimbers are really low, way below the average.
> > > 
> > > Any ideas, is it the cat?
> > > 
> > > Nathan
> > >
> >
>









To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/dmcnews/

<*> To unsubscribe from this group, send an email to:
    dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/