Re: 83 Camaro w/Quadrajet 4 barrel. Can not pass emisions. Hydro carbons over 1000. H
what kid said.
HC is usually a misfire.
NOx is usually high combustion temperature (EGR system failure.)
Has it passed in years past?
86 SS, lotsa mods
If you need a PN in a hurry so you can order it and wait 10 days for it to get there instead of buying it locally, you're not in that big of a hurry.