Recently my 2000 Automatic Kia Sephia LS started to pour our white smoke from the tail pipe. I would say that the car is done for, but the smoke smells like a HEAVY concentration of gas. With the rise of this problem acceleration drastically fell, and it seemed like it was misfiring. Being the cost conscious college student I am I ran to auto zone and had them pull up the codes because my cel stays on.
The following codes showed up:
P0171 P0204 P0326 P0460
I was advised to change out the plugs, which I did. Replaced them with Auto Zones Duralast Wire Sets for 30 bucks. I've been told by a few people that there could be 3 reasons why this is hapening if my coils wires, and plugs are fine.
1) Knock Sensor & PCSV-
Any help would be appreciated greatly