This morning on my drive to work the SES started to flash. I pulled over and pulled only a P0305 code. I opened the hood and noticed smoke coming from driver side of vehicle. Couldn't place exactly where. I noticed a little bit of oil leaking down the engine block. Oil was a quart low, but color is normal. Coolant level is normal. Put new wires on five years ago, and wires look good, no unusual wear on them. I replaced the MAF recently, but it is still running rich.