Quote:
Originally Posted by zeronero
15 MPH Test
RPM: 1350 - CO2: 14.1 - O2: 0.6
HC(PPM) MAX: 105 - GP: 280 - MEAS: 232
CO(%) MAX: 0.69 - GP: 2.19 - MEAS: 0.59
NO(PPM): MAX: 757 - GP: 1943 - MEAS: 2356
25 MPH Test
RPM: 1361 - CO2: 15.1 - O2: 0.2
HC(PPM) MAX: 80 - GP: 230 - MEAS: 102
CO(%) MAX: 0.56 - GP: 2.06 - MEAS: 0.15
NO(PPM) MAX: 696 - GP: 1743 - MEAS: 417
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You have high NO which indicates the EGR system is not flowing to reduce combustion temperatures on your first 15mph test..
High combustion temperatures produce high NO.
You need to find out if the vacuum hoses and the EGR valve are functioning.
CO indicates your cat's working okay but fuel mixture a little rich at low speed which might be a lazy O 2 sensor..
Was this an Enhanced test or a Basic. ?
We don't have Smog Checks here, but I think we ought to.
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