One problem related to engine knocking noise has been reported for the 2013 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Ford F-150 based on all problems reported for the 2013 F-150.
Upon accelerating from a stop 4or 5 loud knocking sounds were heard and felt, and engine power loss was experienced. I let off throttle to reduce knocking sound,which sounded like turbo wastegate possibly, and engine shook and had reduced power for several miles. Temperature outside was warm and dry. I had been driving vehicle for over an hour before problem. It has had reduced power and minor shaking before,but nothing like this. Fortunately no other vehicles were coming. I do notice wastegate poping off on short,steep hills more lately. I have the ecoboost engine. Have not been to dealer yet, but have appt soon.