Failed emissions - Help!
Our project 88GT failed emissions. My son just got back and failed 3 out of 6 tests - inspector said car was running real rich, here are the stats from the printout:
15MPH 25MPH
Limit Reading Result Limit Reading Result
HC ppm 180 181 Fail 174 1293 Fail
CO% 1.01 .70 Pass 1.12 3.44 Fail
NO ppm 1378 844 Pass 1258 684 Pass
RPM 1834 Valid RPM 1789 Valid
DILUTION 14.65 Valid DILUTION 15.13 Valid
VISIBLE SMOKE INSPECTION: PASS
Car has complete MAC exhuast with long-tube headers, and cats. Original O2 sensors - could this be the cause?
Any help is really appreciated!
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