i got a 95 ranger 4.0 and i was wondering how hard it is to change the spark plugs, is alot of work involved?

 

last one passenger side is a little awkward to get at, as is the one behind the power steering pump, but in general, NO.

Do them 1 at a time to keep the wires in the right place and you should not have a problem. use antisieze on the threads and dieelctric grease on the caps.

 

And look at your plugs too. They tell a story.