5 check engine codes. P0300 P0301 P0302 P0303 and P1399. It s\ runs and but the CEL blinks. It will also stall out after a while.
Also I got White smoke coming out tail pipe.....

Where should i start?

vacuum leak anywhere between the air sensor and the engine?
o2 sensors, distributer , catalytic converter where replaced within the year....

Spark Plugs? Fuel Filter? Fuel Pump?

Any help would be great..