I've had this ongoing issue with my 2011 Ford F150 FX4 Ecoboost. The engine grinds on start ups and the truck loses power when it's being driven making it very dangerous to pass cars on the highway. Fords remedy was to issues a TSB 14-0194 (primary timing chain replacement) which was a temporary fix used to send owners of Ecoboost vehicles away and have their warranties run out before the issue returned. I was lucky (or unlucky) enough to have this issue return for a second time while still under the powertrain warranty. I'm curious to see what Ford will do this time around to get rid of me.
