Hi Leshi, Im AL the owner of Big As Auto Repair
There is no adjustment for the lifters on a 2.7 Chrysler engine.
The noise could be upper valve train problems OR Oil Pressure problems. Without a proper diagnosis there is no way of knowing what is causing the noise. It's possible it could be a pulley or something else making noise as well.
Hope this helps and please send people to my auto-repair-website to check out all my satisfied customers.
http://www.bigasautorepair.com/
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