AlanS

1989 300te...failed New York State Inspection...Hydrocarbons too high (HC)...1.11gpm, limits 0.80.
I have no idea where to start. I have regular fuel in the car, does that matter? I have 30 days to get this thing up to snuff...

Saijin_Naib

Check your fuel mixture? Thermostat? Fuses, cat, exhaust, fuel system cleaner, air filter. Does it idle rough? That's where I'd start.

Rio Z Lander

same here start with cheap fix parts and work your way up from there to the big $$ parts. i know i don't feel faint when behind my car anymore
but there is still a hint of some thing. but i have a sweet smell from my car most the time. i run 92 in my car

Chappy

Did you have the car up to operating temp? A long time ago, a tech told me to run the car hard for 25-30 minutes and get the cats HOT! This is supposed to help emmissions....my old 300CE never failed emmissions when I did this first.