To my recollection, all CA vehicles 1976 and newer need to pass smog every two years. Problem is, most places that do smog aren't really mechanics and don't know squat about carburetors. I had a Ford Ranger with 380,000 miles on the engine that I could get to pass smog every 2 years. It was never a "burning oil" issue. It was always related to combustion. That cross over in the manifold may need to be cleaned. The carburetor should either be replaced with a re-man unit from National Fuel Injection(lifetime warranty), or do your own rebuild with some real Berryman's Carb(Amazon)dip..........not the junk environmentally suitable crud they sell in the parts stores. Not sure if Mopar used a version of a Thermactor set up like Ford did. If so, that is good place to look at for sure. One thing is for sure and try to remember this....All vehicles that passed smog once, can pass smog again. There is not a vehicle made that "can't pass smog". You just have to find out what the issue is and correct it.....not always easy, but is always possible.
