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Q: Failed SMOG due to HC level at 25 mph. on 1995 Nissan Sentra

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
it failed smog with high HC at 25mph(57 vs. 62). at 15 mph it'a at max at 92. Changed oil, pvc valve, cap n rotor, plugs, and wires week ago. changed O2 sensor yesterday. 'C' catalyst monitor is blinking in car reader. no codes or cel. In CA, should all the "Readiness Monitor" be available? thank you.
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