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Help!!! Calfiornia my SC300 did not pass smog test???
Today I took my 92 SC300 to get it smogged and it failed badly. I need some help on what to fix. The smog technician said to check up on the o2 sensors which I replace like 3 years ago(??) or cat converter / egr valve... my other mechanic friend told me egr valve is working fine...
what are some other things that i can do to help lower the emissions to pass? Here's a pic of the results. Please let me know what I can do. Thank you in advance.