fuel mixture analysis
From: Carl Jones (carljoneshotmail.sg)
Date: Thu, 3 Nov 2011 15:15:36 -0700 (PDT)
There is a rogue figure in there, that afr at 30.20.  At a 30.20:1 ratio the car wouldn't run as it would be way too lean to fire, I would expect to see somewhere around 14 or so. Clearly a USA specification car, no way a Euro 308 would get the CO down to 0.87!!! (%  I assume).  Same with the HC reading.  It's not really telling you anything until we get the AFR (Air fuel ratio) sorted. 
 
Regards,
 
Carl.
 
 
 
 
----- Original Message -----
Sent: Friday, November 04, 2011 8:18 AM
Subject: [Ferrari] fuel mixture analysis

1981 308 GTSi: I had a fuel mixture done on my car and the mechanic even printed a report of it from his little machine. I took it and left without asking him what this was all about. Can anybody explain what this should tell me about my fuel mixture ?
 
02   %   12.27
co2   %   6.5
hc   ppm   498
co   %   0.87
cok   %   1.77
afr       30.20
nox   ppm   33
 
Michael Savard


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