2012 f150 3. 5L Ecoboost engine. Had the all too well known rattle at start up because of failed to ing components/timing chain stretched. Repair cost me 5k dollars and failed AGAIN after only 4000 miles. Got code for timing being over-retarded. Took to dealer that initially did the job. Were supposed to repair at no cost to me, in my opinion anyway. Then they send me a video and tell me something else with the timing was the issue. When I called back to confirm, the story changed again that they never replaced the current failed part in the first place. All these engines have the same problem spanning numerous years and not my truck is being held hostage because they want another 15,000 from me for a new engine! 20,000 for a remanufactured engine is crazy! Please help owners and investigate this issue with Ford Ecoboost engines!