Seen a lot of MPG topics come by, this one has to do with the replacement of the head gasket. Engine is a 93 350 TBI with 183k. Replaced the head gasket, t-stat, radiator, all other necessary gaskets, placed exhaust man gasket, milled the heads to make sure they where straight.
Now the sad thing in which I need the groups advice. Mpg went from a steady 22 to 17. I can't figure out why. Did I overlook something? Engine runs good and strong, starting both warm and cold is good.
I don't think an OBD I "learns" again if the battery was disconnected and if it does, it's sure taking its time. Did 2000mi now after the rebuild, both in and out of town. All other is equal, driving habits, cruising speeds.
Any advice?