When the car is running which side of the timing belt should have slack? Just curious if my timing belt is tensioned wrong or not. Or I may have stretched it.

 

iF you are facing the cam gears
the left side should have the slack

 

Is there a way I can tighten the slack up or properly tension the belt without removing everything again.

 

u have to take the belt off again and play with it .
I use the old bicylcle trick own how u put ur chain back on.

First loosen the tensioner I take it and be sure thats it TDC. and give it a turn so the cams rotate counter clockwise. a inch or inch and a half. and then put the belt back on and rotate the cams back to TDC where the lines meet up. then tighten the tensioner. that always works for me

 

its real easy if you just use a pry bar and a screw driver.