found this and thought id share 
ISSUE:
Some 2011 Edge, MKX, Explorer and Mustang vehicles, equipped with a 3.5L or a 3.7L engine and built on or before 5/1/2011 may exhibit a cold startup ticking noise coming from the engine. The noise is present under the left hand (LH) valve cover and may last up to ten minutes.
http://www.allfordmustangs.com/foru...rds-engine-startup-ticking-noise-img_0006.pdf
http://www.allfordmustangs.com/foru...rds-engine-startup-ticking-noise-img_0008.pdf
http://www.allfordmustangs.com/foru...rds-engine-startup-ticking-noise-img_0009.pdf
ISSUE:
Some 2011 Edge, MKX, Explorer and Mustang vehicles, equipped with a 3.5L or a 3.7L engine and built on or before 5/1/2011 may exhibit a cold startup ticking noise coming from the engine. The noise is present under the left hand (LH) valve cover and may last up to ten minutes.
http://www.allfordmustangs.com/foru...rds-engine-startup-ticking-noise-img_0006.pdf
http://www.allfordmustangs.com/foru...rds-engine-startup-ticking-noise-img_0008.pdf
http://www.allfordmustangs.com/foru...rds-engine-startup-ticking-noise-img_0009.pdf