5.0 Engine Knocking
Senior Member
Joined: Feb 2013
Posts: 6,696
Likes: 3,086
Acutally no I did not. I thought the knock was related to the heat/air being on but over the last couple of days the truck will still make this noise regardless of the heat being on or off. Basically I have no idea what is causing this. I'm just glad I have a warranty in case something goes south.
60k miles later, still no issues as this noise is from the HPFP...it is sometimes louder and sometimes less.
I'm not worried about it...plus Ford says it's "normal" !!
...so they must be right!! 
