Recently I have been checking some engine noise issues, and after some great advice form you guys on this forum, I went ahead and attempted to check my Spark plugs to make sure they were torqued to spec. I actually have a few 9/16 sockets, two of which were purchased specifically for the F150 I have a 2007 4.6l model. Issue is that no matter what plug I try to spin it rolls around and doesn't seem to grab any of the plugs. I can't really tell if the plug heads are stripped, but I couldn't get any to catch on. Not sure if this is a common issues with the F150.

 

Try a 5/8 plug socket....I'm sure that's what I used on my older trks
Sounds like you are not on the plug hex with the 9/16 socket ??

 

+1 the 4.6 uses a 5/8” socket size on the spark plug.

 

and make sure the plug wells are cleaned out and not full of debris.

 

i'll give it a go, btw what are the troque specs for the 4.6l

 

FTM youtube is a great resource

 

28 ft. lbs. is considered the new spec
You will see anything from 11 to 22 and 27 in books
132 inch pounds was once the spec
Lovely