Just returned from smogging the car.....and it didn't pass. Here are the figures from the printout.....
TEST - 15MPH
HC (ppm) - max: 108, ave: 31, meas: 82
CO (%) - max: 0.71, ave: 0.10, meas: 0.50
NO (ppm) - max: 767, ave: 237, meas: 909 <---- failed
%CO2 - meas: 14.4
%O2 - meas: 0.6
TEST - 25MPH
HC (ppm) - max: 83, ave: 20, meas: 48
CO (%) - max: 0.58, ave: 0.09, meas: 0.51
NO (ppm) - max: 706, ave: 199, meas: 698 <---- getting close to fail
%CO2 - meas: 14.4
%O2 - meas: 0.4
Last night I did an oil/filter change since that will usually help in improving the numbers during the test. With high nox at 15mph, what do you think could be the problem? The test tech says that perhaps the cat needs replacing....but I'm not sure if I can take that as sound advice since he had to ask me (prior to the test) if my car was front-wheel drive :loco:
Any ideas on what I should look into first? I can get a re-test free within 30 days. And for the record, the car is currently running a stock chip and 91 octane fuel.
Jon
TEST - 15MPH
HC (ppm) - max: 108, ave: 31, meas: 82
CO (%) - max: 0.71, ave: 0.10, meas: 0.50
NO (ppm) - max: 767, ave: 237, meas: 909 <---- failed
%CO2 - meas: 14.4
%O2 - meas: 0.6
TEST - 25MPH
HC (ppm) - max: 83, ave: 20, meas: 48
CO (%) - max: 0.58, ave: 0.09, meas: 0.51
NO (ppm) - max: 706, ave: 199, meas: 698 <---- getting close to fail
%CO2 - meas: 14.4
%O2 - meas: 0.4
Last night I did an oil/filter change since that will usually help in improving the numbers during the test. With high nox at 15mph, what do you think could be the problem? The test tech says that perhaps the cat needs replacing....but I'm not sure if I can take that as sound advice since he had to ask me (prior to the test) if my car was front-wheel drive :loco:
Any ideas on what I should look into first? I can get a re-test free within 30 days. And for the record, the car is currently running a stock chip and 91 octane fuel.
Jon
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