My 85 GL just failed a California smog check pretty badly. Both the HC and
CO levels were really high (for both the idle and 2500rpm tests).
Everything else checked out fine (visual inspections, rpm, CO2, etc.) Over
the past few years, it has never even come close to failing. The engine
still runs well and everything seems pretty normal (to my unexperienced eye
and ear). But I have noticed that the gas mileage has gotten worse over the
past 6 months. Is there a connection between these two?
        I would really appreciate any advice about this. Not only do I need
to pass because it's my only car, but I also feel pretty guilty about being
a "gross polluter."
        Thanks,
        Wilson
        85GL