What is your exhaust temp?

[rhock99@epix.net (Ryan H)]

Yes, it makes sense - if you were running a bit lean at idle, it wouldn't hurt the engine, but your exhaust temps would be pretty high.  Richening the mixture will help this (I believe because fuel acts as heat absorption), but unfortunately it will increase the other emissions pollutants (hydrocarbons?).  So it's a matter of trying to get the mixture rich enough to just barely pass the NOx test and not fail the other tests...

> 
> From: RRoyce4u@aol.com
> Date: 2003/03/09 Sun AM 03:49:24 EST
> To: scirocco-l@scirocco.org
> Subject: What is your exhaust temp?
> 
> What is your exhaust temp and did it pass emissions?  
> My 16v failed emissions and I was wondering if you could adjust air/fuel ratio by measuring the exhaust temp? My car failed on Nox only. NOx is created when your engine internal temp reaches 2500 degrees. I measured my exhaust temp after emissions and it was greater than 220 degrees. After I enriched the fuel by a 1/8 turn the temp dropped to 170 degrees. Am I on to something or way off base?
> 
> 
> 
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