[alfa] Re: emissions once again

[Joe Elliott <jee@xxxxxxxxxxxxxx>]

So I take it this isn't an Alfa?  (I'm assuming that you meant Bosch 
K-Jetronic or Bosch CIS, which are the same thing.)  I would guess 
that it's running rich--HC stands for hydrocarbons, or unburnt fuel. 
If it's running rich enough to fail a smog check on HC, I'd be 
concerned that there might be enough unburnt fuel in the exhaust to 
damage the catalyst.  There were a lot of different versions of that 
system over like 20 years, and I'm not terribly familiar with any of 
them, but if there's not something you can adjust to lean it out a 
bit, maybe you should replace the oxygen sensor.

-Joe

At 6:39 AM +0000 2/15/04, alfa-digest wrote:

> Date: Sat, 14 Feb 2004 17:34:33 EST
> From: Alfanovice@domain.elided
> Subject: [alfa] emissions once again
>
> With all the talk and expertise on emissions testing, I thought I would pose
> my own question.  In Texas the test is run at 15mph and 25 mph.  In my case
> low speed resulted in 1887 rpm and high speed in 2030 rpm.  My car 
> barely passed
> HC's on the low speed test by 1ppm last March.  This means it showed 193ppm
> with a standard of 194 ppm for HC's.  CO% and Nox(ppm) passed just fine.  Can
> anyone tell me why HC's are high and what I might have to do next month to
> pass?  This car just needs to pass one more time.  Yes, I believe the cat is
> original, with 177,000 miles.  Also, on the high speed test, HC's 
> passed with 163
> ppm with a standard of 189 ppm.  This car has Bosch KIS injection, four
> cylinders, and a five speed transmission.
>
> Thanks for any and all suggestions,
> Brian Ancelin
> Denton, TX
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