failed nj smog test

[nsantos23]

hey guys how you doing

my 90 legacy failedthe emissions test today
here are the numbers

HC standard 100 reading 141
CO% standard 0.50 reading 4.85!

i got no CEL on, do you think is the Cat converter?

thanks in advance

Neo

[evolutionmovement]

Could be for the CO numbers, but it also sounds like it's running rich with those hydrocarbon readings. I'd start with the o2 sensor.

Steve