I put the old 79 through the Smog Nazi test. Yes Vancouver area B.C. Canada has a very strict test. They are a little easyer on older cars like mine. when I bought my Vette it was running like crap missing, sputtering and it looked like a lightning storm under the hood. But some how it had passed and it was good for a year. I rebuilt the old mecanical distributer, new cap+rotor,new coil, new wires+plugs(Could not Believe where the plugs were or the wires for that matter one went through the motor mount!!!) Rebult the carb and I think this is were the problem happened. The car purrs like a kitten and well I'm going to need new tires soon. I was positive it would pass no problem HA were dealing with NAZI'S here. Driving test: Hydrocarbons: 66.00 PPM Pass. Carbon Monoxide:0.17% Pass. Oxides of Nitrogen: 960.00 Pass. Idle Test: H.C.: 453 PPM Fail. Max alowable 345 PPM. C.O.:0.46% Pass. The book Haynes said to set the idle jets at 4 turns obviously to much. I turned them both in 2 turnes before it affected the idle so I figure I'm good to go. What do you folks think. At 24$ per test I want to pass the next one.