I want to fix it myself
It will not pass the california smog test plus there is no check engine light on on 1992 Toyota Corolla
what are the numbers?? O2 CO2 CO HC NOx, I need to know the numbers at both 15 & 25MPH. also, are there any mechanical/compnent failures indicated on yoi VIR.
What is the reason for the failure of the smog check?