magnum7579
+1y
All right guys/gals I have another question. I put a cold air kit on my '03 F150 w/the 4.6. I had a check engine code come up (bank 2 running rich) and it might be the mass air flow, O2 sensor, vacum leak, or a spark plug. Wondering if this could be related to the cold air kit or something else. I have noticed discolored exhaust smoke when I start it up after sitting for a week or so. Lookin to see whay you can tell me...