We have had the truck "Smoked" twice and found the intake gaskets and Fuel Regulator leaking so we replaced the following so far.
Upper and Lower intake gaskets and valve cover gaskets (Victor Reinz found out that was who Ford recommended since they do not make all the parts anymore.)
Throttle Position Sensor and Mass Air Flow sensor
All three O2 sensors twice
PCV Valve and hose
We have checked for vacuum leaks by spraying mass air flow cleaner and brake cleaner nothing happened.
However, the Short Term Fuel Trim is from 0 to 11% and the Long Term Fuel Trim is at 25%.
We have a small but effective scan tool to give us those readings and we have disconnected the battery for 4 hours and reconnected and drove it 200 miles in town and highway and still have the codes and the fuel mileage is not great at 18 mpg but, we do not have hesitation nor rough idle so, my son and I are a little upset and it has to pass an emissions test to get inspected and it will not at this time. Can you help?
Monday, August 26th, 2013 AT 6:46 PM