Depending on which engine and which belt, you may have a tensioner that is spring loaded. It is pushed aside by using a large pry bar or 1/2 inch breaker bar.
The 4 cyl engine uses V belts, so you should have an idler pulley which is adjusted with a bolt. You loosen the bolt in the pulley then turn the adjusting bolt.
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Sorry guys but I cant figure out how to edit this post. Anyways, I am trying to loosed the tensioner for the belts on a 1993 Isuzu Rodeo. I guess it is no just as simple as turning the bolt. Turning the bolt is tough, even with penetrating oil. Either way, turning the bolt does not seem to loosen the idler pulley. There must be some trick!
Thanks, It is a V6 and you hafta loosen the pulley bolt and turn the adjusting bolt. BTW: best thing to do is to use an offset 22MM box-end wrench to loosen the pulley bolt. Don't forget to eat your Wheaties before attempting this.
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