CUTLASS CIERA 2.5L HAVING A HARD TIME STARTING. HAVE REPLACED FUEL INJECTOR, O2 SENSOR. STILL RUNS ROUGH IN IDLE, GAS MILEAGE SO SO, STILL HARD TIME STARTING. DOES RUN BETTER ON HYWAY. ALSO RUNNING RICH. SOME BLACK SMOKE

Cars & Trucks - Oldsmobile - Cutlass Ciera