I've got my Motorcraft copper plugs all ready to go into the truck. I've loosened the plugs except for the rear plug. That one is a little difficult to get to. Is there a trick to getting that one out? There seems to be a little vacuum manifold right on top of the plug. Do I need to remove that? I hope not.

This is a 1993, btw.

I'm used to working on import cars that have much smaller engine bays. This one is huge, and even with my long arms I find I have to just about climb into the F-150 engine bay to get to stuff.

 

Sometimes it's easier to get to them from underneath.

 

I did end up moving the vacuum block, but I didn't have to disconnect any lines. Once I moved the block, getting to plug no. 6 was easy

 

Glad to see you figured it out!