[Shotimes] High NOx during emission test

[Ron Porter]

Cats can cause high NOX? I thought that high NOX was due to high combustion
chamber temps. Bill's car wouldn't have an EGR (unless it was originally a
CA car).

Going back into the memory banks, but doesn't slightly retarded timing
increase CC temps?? Just wondering.

Seems like running a load of high-octane gas, alky gas, or a load of Toluene
may help.

Ron Porter

-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
On Behalf Of krazgeo@comcast.net
Sent: Sunday, March 05, 2006 10:23 AM
To: shotimes@autox.team.net; SHOTimes
Subject: Re: [Shotimes] High NOx during emission test

 -------------- Original message ----------------------
From: "SVTSHO (Bill Byrer)" <svtsho@worldnet.att.net>

> Since I now have a year to correct whatever the problem might be, I am
looking
> for suggestions, thoughts, or comments.
> 

EGR is the primary agent to reduce NOX output.  That system needs to be
working properly.  If you don't have EGR, then the cats are all you have.
If they are original, they are getting tired.  If they are newer, then you
might have to pull the 10 degree plug up in the right front corner of the
firewall in order to keep the timing from advancing during the test.  The
car runs terrible, but it will pass the NOX test.

George
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