I have a 2004 Expedition NBX. 5.4 with no visible solenoids sticking out of the valve covers. I have a cone shaped air cleaner and plastic valve covers. I'm hearing a clatter noise at times almost like lifters with low oil pressure but no knocking noise like what is described in the YouTube videos.

 

That has the 2v.

 

Are you using 5w20 oil and a Motorcraft filter?

 

I use Royal purple 5w20 and K&N oil filter.

 

I use Royal purple 5w20 and K&N oil filter.

 

I would use a Motorcraft 5w20 with a MC filter.

See if anything changes.

 

Nothing wrong with that oil and filter. They are both as good as OEM.

 

thanks I'll give that a try.