Well, the CEL did appear after getting rid of the plug defoulers. So I had new cats welded in this week.
CEL is gone, horrible running rich smell is gone, but the bad MPG seems to be hanging around. Still on the first full tank of my regular route driving but seems to be sucking it down, much more than the 5.3 motor should. Will update again when I have an actual MPG from a full tank refill.
CEL is gone, horrible running rich smell is gone, but the bad MPG seems to be hanging around. Still on the first full tank of my regular route driving but seems to be sucking it down, much more than the 5.3 motor should. Will update again when I have an actual MPG from a full tank refill.