I have a 2014 F 150 4X4 ECO Boost that I brought new. 66000 miles. Fuel economy had been 17.5-18 mpg since new. All of a sudden it dropped to 13 then 12. Took it into Ford dealer and they said it was carbon
build up on the direct injection port. They said Ford recommended a special flush to remove the carbon every 30K miles. $150 cost First I heard of it and the truck was only serviced by them. Did the flush 2 weeks ago and 11-12mpg now.
Now they are saying they have to pull the heads at a cost of $3500 o remove the carbon. Maintenance item so not covered by warranty. WTF! Anyone else hear of this problem.
Lefty C
