So im on re assembley of my 4.0 doing timing chains. Used the special tools all new parts etc. New tensioner are in. But while turning it over by hand obviously there is a certain spot on both chains that are loose on one side then keep turning and they tighten back up. And the tensioner go in and out. Is that to be expected? Or should it be tight both sides all the time. I used the tensioner tool before I tightened the camshaft sprocket so it would evenly tighten the chain like your supposed to so im lost.

 

Hand cranking an engine won't replicate an engine turning at any operational speed. Running conditions send pressurized oil to the tensioners.

 

I was just checking that valves weren't hitting pistons or binding and noticed. I kinda figured but its on the opposite side of the tensioner so I thought it was odd