Escort Black Smoke
I've got a 1993 Escort 1.9L SOHC with a manual tran. Since getting colder out I have had a lot of problems with idleing, stalling, poor mpg and black smoke out of the exhaust. I have replaced plugs, wires, air filter, fuel filter, coolant temp sensor, throttle position sensor, upstream o2 sensor, and run more injector and engine cleaners through than I would like to list. I seem to have fixed the stalling and possibly the idle issues with the o2 sensor but i'm still getting the black smoke. What have I missed?