Car suddenly died on highway. Has power. Used a code reader and replaced cam shaft sensor. Still wouldn't start. Out of the 3 cylinders in the front you can access easy enough only the far left gets power to the injector and has fuel. Spark was good on all 3 cylinders just no fuel/power on other 2. Also replaced crank shaft sensor and tested harness and have proper voltage. Dont know where else to start. 2 days earlier I had light smoke come out of center AC vents just running plain air. No AC. Any ideas. Checked all fuses and all seem fine.